Residential apartments

[gmatrant]

Unlike smaller apartment buildings, which have fewer than four
residential units in them, each room within any residential complex must be equipped with a sprinkler system.

A) Unlike smaller apartment buildings, which have fewer than four
residential units in them
B) Apart from those apartments that are in buildings that contain
fewer than four residential units
C) In contrast to smaller apartment buildings that contain fewer than
four residential units
D) Unless the apartment building contains fewer than four residential
units
E) Excluding those apartment buildings that have fewer than four
residential units in them

[selango]

Option D is correct and better choice.

[gsinghal]

one more vote for D. Apt and concise.


Thanks
Gaumzi

[Jim@Grockit]

Every choice other than D sets up a (false) comparison between "apartment buildings" in the underlined portion and "rooms" in the non-underlined portion.

[ankurmit]

I am confused between D and E

can anyone explain me whats wrong with E

[niksworth]

I am confused between D and E

can anyone explain me whats wrong with E

In E, in them is redundant.

Also, incorrect comparison between apartment buildings and room.

Correct formulation similar to E would be - Excluding the rooms in those apartment buildings that have fewer than four residential units