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: planting trees has a positive impact on an ecosystem, Fact2: An ecosystem contains many habitats., Question: doing what with trees has a positive impact on habitats (A) making tables (B) chopping down (C) planting (D) watershed (E) earth (F) bloom time (G) growth (H) timbering
Example Output: C

Example Input: Fact1: a light bulb converts electrical energy into light energy when it is turned on, Fact2: A photon is a packet of light energy., Question: a bulb converts electrical energy into what type of particle? (A) quarks (B) bosons (C) tiny (D) an object (E) waves (F) electrons (G) photon (H) Vibrates
Example Output: G

Example Input: Fact1: Food is easier to chew because it is moistened by saliva from the salivary glands., Fact2: Besides, saliva contains digestive enzymes ., Question: What do digestive enzymes make easier to chew? (A) water (B) food (C) 86400 (D) sunlight (E) herbs (F) weater (G) saliva (H) fat
Example Output:
B