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: Fertilization occurs when sperm swim to an egg inside an archegonium., Fact2: Gametes in males are called sperm, and in women commonly referred to as eggs., Question: What occurs when a male gamete swims to an egg? (A) permineralization (B) competition (C) movement (D) rapid expansion (E) fertilization (F) birth (G) copulation (H) ovulation
Example Output: E

Example Input: Fact1: Genes that are located on the same chromosome are called linked genes., Fact2: Linked genes are inherited together., Question: Genes are inherited together if they are located on the same what? (A) the eyes (B) chromosome (C) cell (D) gene (E) pollen (F) sensory neurons (G) DNA (H) Most plants
Example Output: B

Example Input: Fact1: damming a river can cause a lake to form, Fact2: Beavers build dams., Question: What animal can help lakes to form? (A) mussels (B) the trout (C) sea urchins (D) eukyarotes (E) the duck (F) The beaver (G) amphibians (H) the otter
Example Output:
F