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").

Ex Input:
Fact1: Antigens are molecules that the immune system recognizes as foreign to the body., Fact2: Antigens prompt the body to produce antibodies., Question: Antigens are molecules that prompt the what of antibodies? (A) termination (B) failure (C) humans (D) decrease (E) production (F) anemia (G) rapid expansion (H) kinetic

Ex Output:
E

Ex Input:
Fact1: a plant requires sunlight to grow, Fact2: Sunlight is turned into energy by plants., Question: Sunlight is made of (A) Prism (B) lightning (C) colors (D) glass (E) chlorophyll (F) dirt (G) energy (H) photons

Ex Output:
G

Ex Input:
Fact1: Precipitation falls on the windward side of the mountain range., Fact2: Rain is also known as precipitation., Question: When it rains in the mountains where would the rain fall? (A) looseness of dirt or compost (B) Plant growth is reduced (C) It used to be covered by water (D) Inches or fractions of inches. (E) air mass over Earth's surface (F) on the windward side (G) In the winter (H) colder and wetter

Ex Output:
F