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: Cells are the basic units of the structure and function of living things., Fact2: Tigers are the largest of the living cats., Question: Cells are the basic units of the structure and function of what? (A) water (B) mammals (C) ice (D) tigers (E) animals (F) humans (G) plants (H) the Sun
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: Cells that divide uncontrollably may form a tumor, or abnormal mass of cells., Fact2: For example, a fibroid is a tumor, a wart is a tumor, and cancers are tumors., Question: A fibrod, wart and, cancer are all forms of what cell? (A) Something coming from a gland (B) remains of prehistoric life (C) cells divide uncontrolled (D) sub-units of species (E) deadly and devastating (F) the body's largest organ (G) share properties (H) cause people to become sick.
Example Output:
C