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: Many plants respond to the days growing shorter in the fall by going dormant., Fact2: Jade plants have an active and a dormant growing cycle., Question: What do Jade plants do in the fall? (A) Change colors (B) Go dormant (C) Reproduce (D) Wilt (E) Exfoliation (F) Refract it (G) relocation (H) It expands
Example Output: B

Example Input: Fact1: a plants require water for survival, Fact2: Water contains hydrogen and oxygen., Question: What do plants require for their survival? (A) Light (B) Proteins (C) Energy. (D) salinity (E) hydrogen (F) nutrients (G) sunlight (H) food
Example Output: E

Example Input: Fact1: Antigens are molecules that the immune system recognizes as foreign to the body., Fact2: Antigens are expressed by cancer cells., Question: What can recognize cancer cells as foreign to the body? (A) electromagnetic energy (B) viruses (C) the immune system (D) bacteria (E) Allergies (F) Microscope (G) the colon (H) turn to a doctor
Example Output:
C