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: when a metal rusts , that metal becomes orange on the surface, Fact2: Iron rusts in the presence of oxygen and water., Question: Exposure to oxygen and water can cause iron to (A) decrease strength (B) melt (C) uncontrollable burning (D) thermal expansion (E) turn orange on the surface (F) vibrate (G) Extremes of temperature (H) levitate

Output: E

Input: Consider Input: Fact1: better senses have a positive impact on an animal 's survival, Fact2: All dogs are animals ., Question: what can have a positive impact on survival with better senses? (A) pugs (B) deer (C) pigs (D) mice (E) dog (F) cats (G) bird (H) cows

Output: E

Input: Consider Input: Fact1: Alternation of generations allows for both asexual and sexual reproduction., Fact2: If a single base is altered, a point mutation is generated., Question: a point what allows for both asexual and sexual reproduction? (A) trees (B) graptolites (C) barnacles (D) orchids (E) Summer (F) mutation (G) Most plants (H) pine
Output: F