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: Plants use cellulose for their cell walls., Fact2: Basically, fiber is cellulose ., Question: What is made from cell walls? (A) water (B) blood (C) cells (D) sugar (E) a path (F) fiber (G) moss (H) Carbon

Ex Output:
F

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: lack of moisture in the air causes low amounts of rainfall, Fact2: Humidity is moisture in the air., Question: Lack of what in the air causes low amounts of rainfall? (A) humidity (B) Bodily water (C) aridity (D) Dehydration (E) sweating (F) nutrients (G) drought (H) dryness

Ex Output:
A