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").

Input: Consider Input: Fact1: smell is used for finding food by some animals, Fact2: Olfaction is the sense of smell., Question: What do some animals use to find food? (A) Echinoids (B) breakfast (C) time travel (D) Energy (E) streams. (F) heat energy (G) nature (H) olfaction

Output: H


Input: Consider Input: Fact1: Mutations that lead to cancer usually occur in genes that control the cell cycle., Fact2: Cancer is an example of a mutation in cells., Question: What usually occur in genes that control the cell cycle? (A) Leptospirosis (B) competition (C) A Greek letter (D) a mutation in cells (E) Plant reproduction (F) biological diversity (G) resistance (H) resistance activities

Output: D


Input: Consider Input: Fact1: Most invertebrates have a more complex nervous system., Fact2: Insects are the most common invertebrates., Question: What crawls and is known to have a complex nervous system?  (A) fur seals (B) Insects. (C) mammals (D) animals (E) a fish (F) humans (G) bees (H) ducks


Output: B