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:
do all insects have to undergo every stage of change before becoming full grown? (A) all of these (B) insects are born live (C) pupa stage is sometimes skipped (D) pupa is a required stage

Ex Output:
C


Ex Input:
A stone may experience the most weathering over (A) a week (B) a year (C) a century (D) a decade

Ex Output:
C


Ex Input:
A small creek becomes a rushing river after years of heavy rains in a particular location. In addition to the larger water source, there are also greater (A) rock fights (B) sheep herds (C) bunny rolls (D) speaking deer

Ex Output:

B