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: Evolution is a change in the characteristics of living things over time., Fact2: Trees are the largest of living things., Question: Evolution changes the characteristics of what over time? (A) the Moon (B) Man (C) life (D) trees (E) rocks (F) the Sun (G) humans (H) plants
Example Output: D

Example Input: Fact1: an egg requires warmth to survive, Fact2: Inside the egg, the developing rattlesnake is nourished by the yolk of the egg., Question: a developing rattlesnake requires what to survive (A) warmth (B) companionship (C) nutrients (D) shade (E) desert (F) food (G) energy (H) air
Example Output: A

Example Input: Fact1: Passive immunity lasts only as long as the antibodies survive in body fluids., Fact2: Breast Milk contains antibodies., Question: What can make passive immunity last? (A) resistance (B) sweating (C) Leptospirosis (D) breast milk (E) smoking tobacco (F) the environment (G) competition (H) fur seals
Example Output:
D