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aflaam
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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 their short 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 batteri
Source is GMAT prep
OA is D
My doubt is as we know no two pronouns can have same referent.
But in D, which and their have same referent.
What am i missing?
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 their short 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 batteri
Source is GMAT prep
OA is D
My doubt is as we know no two pronouns can have same referent.
But in D, which and their have same referent.
What am i missing?












