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: global warming is when worldwide temperature increases, Fact2: Mass extinction occurs in the ice age and global warming periods., Question: When worldwide temperature increases, mass what occurs? (A) extinction (B) deforestation (C) carbon (D) ice age (E) living (F) movement (G) It decreases (H) Pollution
Example Output: A

Example Input: Fact1: carpooling decreases the amount of cars used to travel to a place, Fact2: Carpooling cuts down on congestion and pollution., Question: What decreases when we decrease the amount of cars traveling to one place? (A) Temperature (B) Heart rate (C) Climate change (D) Pollution (E) Clean air (F) forces (G) Burning fossil fuels (H) gene flow
Example Output: D

Example Input: Fact1: Some viruses have an envelope of phospholipids and proteins., Fact2: Some viruses are also enclosed by an envelope of fat and protein molecules., Question: What are some viruses enclosed by?  (A) sub-units of species (B) phospholipids, fat, molecule (C) Germy surfaces (D) it keeps an organism warm (E) Something that comes in a bundle of fibers (F) Something made from fermented ricce (G) microorganisms (H) A compound that donates proton
Example Output:
B