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 Input:
which of these people would be most susceptible to disease? (A) a person with a healthy white blood cell (B) a person with optimal conditions (C) a person with a weak white blood cell (D) an athlete with a clean bill of health

Ex Output:
C


Ex Input:
What your body looks like and how it functions is something that is (A) received from one's parents (B) passed away from Earth (C) passed down from eggs (D) passed down from tomorrow

Ex Output:
A


Ex Input:
What slows down the transfer of heat? (A) a wooden wall (B) the wind (C) the sun (D) light rays

Ex Output:

A