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").

[Q]: When the old man was much younger, he still had (A) brown eyes (B) baldness (C) gray hair (D) wrinkled skin
[A]: A


[Q]: Cellular respiration releases (A) blood (B) waste (C) snot (D) feces
[A]: B


[Q]: If a river is rushing southwest on a sunny day, then it is safe to assume that (A) southwest is a good place to be (B) the land gently inclines in that direction (C) the world is mostly land (D) the land is supple
[A]:
B