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: Feathers help birds fly and provide insulation., Fact2: Some birds are flightless birds., Question: Why do the flightless have feathers? (A) layers of fat (B) Sublimation (C) it needs them (D) warm-blooded (E) Air conditioning (F) Radiation (G) Insulation (H) protect them
Example Output: G

Example Input: Fact1: Puberty is the period during which humans become sexually mature., Fact2: Before puberty, adolescents experience their highest nutritional demand since infancy., Question: When do adolescents experience their highest nutritional demand since infancy? (A) carrying offspring to birth (B) occurs over a wide range (C) it increases (D) It's inherited from genes (E) Before sexual maturity (F) 70-75 degrees Fahrenheit (G) dermal & vascular tissue (H) Two or more sets of alleles
Example Output: E

Example Input: Fact1: Absorption of nutrients occurs mainly in the small intestine., Fact2: Food and minerals are both nutrients., Question: Absorption of minerals occurs mainly where? (A) unicellular organisms (B) trees and flowers (C) the Himalayas (D) small intestine (E) the environment (F) flagella (G) after the snow melts (H) Microscopic vessels.
Example Output:
D