In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").

Ex Input:
Fact1: an animal usually requires a warm body temperature for survival, Fact2: Mammals are also warm-blooded and are covered with hair or fur., Question: What helps maintain body temperature? (A) hats (B) Lift (C) the inside of a refrigerator (D) fur (E) skin (F) arctic winds (G) freezing water (H) hair

Ex Output:
D


Ex Input:
Fact1: an animal usually requires a warm body temperature for survival, Fact2: Squirrels hide and sleep in a secret warm place all winter., Question: What requires hiding and sleeping for survival? (A) bacteria (B) rice (C) amphibians (D) organisms (E) Frogs (F) trees (G) humans (H) animals

Ex Output:
H


Ex Input:
Fact1: a stem is used to store water by some plants, Fact2: Every plant and animal needs water to survive., Question: What do some plants need to survive? (A) stem (B) oxygen (C) reading (D) overexposure (E) books (F) sodium (G) Water (H) Sun

Ex Output:

A