In this task, you are given a multiple-choice question and you have to pick the correct option. Answer with option indexes (i.e., "A", "B", "C", and "D").

[EX Q]: Gas can fill any container it is given, and liquid (A) is standard weight and size (B) is the opposite of variable (C) only needs a few (D) uses what it needs
[EX A]: D

[EX Q]: Alligators (A) eat gar (B) eat only foliage (C) have live births (D) are warm-blooded
[EX A]: A

[EX Q]: A carp and a platypus share all attributes aside from (A) blood heating ability (B) egg laying (C) having mouths (D) having tails
[EX A]:
A