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: rocks interacting with wind over long periods of time causes weathering, Fact2: On Earth, rocks are weathered by wind and water, creating soil and sand., Question: What causes rocks to weather? (A) seasons (B) force (C) erosion (D) storms (E) water (F) heat (G) lightning (H) gas

Ex Output:
E


Ex Input:
Fact1: Amphibians have permeable skin that easily absorbs substances from the environment., Fact2: All frogs are amphibians., Question: What has permeable skin? (A) goats (B) alligators (C) animals (D) apples (E) frogs (F) sharks (G) humans (H) snakes

Ex Output:
E


Ex Input:
Fact1: Plants use cellulose for their cell walls., Fact2: Animals lack cell walls., Question: What do animals lack? (A) chromosomes (B) warmth (C) Energy (D) polysaccharides (E) Bodily water (F) fur and fat (G) microbes (H) cellulose

Ex Output:

H