Shuttle vs Orbiting Space station

[Dean Jones]

Dear Friends,

I was having in cracking the following question. Please help.

Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity.

A. the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries
B. the shuttle and earlier spacecraft, with sufficient enough power in fuel cells and batteries for theirshort flights
C. the short flights of the shuttle and earlier spacecraft, which enabled them to carry sufficient
enough power in fuel cells and batteries
D. the shuttle and earlier spacecraft, which were capable of carrying sufficient power in fuel cells
and batteries for their short flights
E. the flights of the shuttle and earlier spacecraft, whose shortness allowed them to carry sufficient power in fuel cells and batteries

OA after some discussion.

Regards
Deano.

[patanjali.purpose]

Dear Friends,

I was having in cracking the following question. Please help.

Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity.

A. the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries
B. the shuttle and earlier spacecraft, with sufficient enough power in fuel cells and batteries for theirshort flights
C. the short flights of the shuttle and earlier spacecraft, which enabled them to carry sufficient
enough power in fuel cells and batteries
D. the shuttle and earlier spacecraft, which were capable of carrying sufficient power in fuel cells
and batteries for their short flights
E. the flights of the shuttle and earlier spacecraft, whose shortness allowed them to carry sufficient power in fuel cells and batteries

OA after some discussion.

Regards
Deano.

Orginal sentence comparison btn flights and space station - not logical. The comparison should happen btn either flights or spacecrafts/space station (same type of entity).

Only B & D.

However B uses both SUFFICIENT & ENOUGH - one is redundant

IMO D - though it is not the best construction (WHICH modifiers appears very wordy)

[Dean Jones]

OA is D. Can somebody explain why it is not B?

[patanjali.purpose]

OA is D. Can somebody explain why it is not B?

Unlike the short flights of the shuttle and earlier spacecraft, which carried sufficient power in fuel cells and batteries, a permanently orbiting space station will have to generate its own electricity.

B. the shuttle and earlier spacecraft, with sufficient enough power in fuel cells and batteries for theirshort flights

IMO two key issues with B:
1) Use of SUFFICIENT and ENOUGH both
2) the prep phrase 'with...flights' though modifies shuttle and spacecraft does not show its purpose. "The shuttle and spacecraft with enough fuel cells for flights" ==> sentence does not further explain anything further about that. As a result, the intended meaning remains hanging.

[GmatKiss]

Good catch between B and D