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:
A source of heat may come from (A) a cold shower (B) holding hands (C) holding ice (D) Antartica

Ex Output:
B


Ex Input:
Which is most accurate? (A) dams can capture powerful gusts and harness their power (B) windmills can capture lightning bolts and harness their power (C) dams can capture lightning bolts and harness their power (D) windmills can capture powerful gusts and harness their power

Ex Output:
D


Ex Input:
A frog was sick because it wasn't staying warm enough. (A) The frog was getting burned by a heat lamp (B) The water in the tank had dried up. (C) the frog was unable to regulate its body temperature without an external heat source (D) The frog was using too much ice in its drinks

Ex Output:

C