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 Q]: 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 A]: E

[EX Q]: Fact1: Plants live just about everywhere on Earth., Fact2: Epiphytes are plants that live on other plants., Question: Where do epiphytes live? (A) swamp vegetation (B) mountains (C) vegetation (D) the environment (E) peachleaf willow (F) ice (G) rocks (H) everywhere on earth
[EX A]: H

[EX Q]: Fact1: Many consumers feed at more than one trophic level., Fact2: Cows and sheep are examples of primary consumers., Question: What can feed at more than one trophic level? (A) sheep (B) salmon (C) grasses (D) bats (E) animals (F) shrubs (G) humans (H) trees
[EX A]:
A