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:
The rhino population is smaller than before because (A) cars crashed into rhinos (B) lions have become more effective at hunting rhinos (C) global warming has increased temperatures (D) people use parts for health remedies

Ex Output:
D


Ex Input:
What does gravity cause substances on a planet? (A) things to move sideways (B) things to be moved upwards (C) things to descend to the lowest surface possible (D) things to stay in the same place

Ex Output:
C


Ex Input:
A series of horrible earthquakes can effect deer populations by forcing (A) relocation (B) planting seeds (C) breeding (D) studying

Ex Output:

A