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 person who wants to eat a watermelon may consider spitting out its (A) dark pips (B) good taste (C) coco pebbles (D) red fruit

Ex Output:
A


Ex Input:
If an island is experiencing a hot summer it is because (A) of the water (B) of the axis (C) of the shade (D) of glaciers

Ex Output:
B


Ex Input:
Remora fish (A) attach themselves to boats like barnacles (B) act as a support system during a shark's reproduction cycle (C) are exclusively kelp and seaweed eaters (D) act as a clean up crew for a shark's crumbs

Ex Output:

D