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").

Example Input: Fact1: the force of water against the seed coat causes a root to emerge from a seed, Fact2: Water is made up of H2O molecules., Question: what is forced against the seed coat to cause the root to emerge from a seed? (A) germination (B) UV (C) urea (D) h2o (E) sunflower (F) rain (G) oil (H) newtons
Example Output: D

Example Input: Fact1: Bivalves feed on plankton and nonliving organic matter., Fact2: Mussels are bivalve mollusks., Question: What feeds on plankton and nonliving organic matter? (A) barnacles (B) mollusks (C) animals (D) the Sun (E) sharks (F) graptolites (G) bacteria (H) dogs
Example Output: B

Example Input: Fact1: Mammals have a layer of fat under the skin to help insulate the body., Fact2: When stored in the body, fat helps maintain body temperature by acting as an insulator., Question: What do mammals have that help maintain temperature? (A) body (B) bone (C) skin (D) fur (E) hair (F) wool (G) Fat (H) coat
Example Output:
G