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: Some parasites live on the surface of their host., Fact2: Leeches are external parasites., Question: What unwanted creature would be found on the surface of a human body using it as a host?  (A) Tapeworm. (B) Leeches. (C) Pesticides (D) animals (E) insects (F) Hookworm (G) bacteria (H) Bracelet.

Ex Output:
B


Ex Input:
Fact1: astronauts require preserved food for extended flights, Fact2: Most of the Shuttle foods are preserved by dehydration, which saves weight and storage space., Question: astronauts require what food for extended flights? (A) Echinoderm. (B) layers of fat (C) dehydrated (D) fresh (E) hand picked (F) nutrients (G) frozen (H) hydration

Ex Output:
C


Ex Input:
Fact1: a fire requires oxygen to burn, Fact2: Oxygen-enriched air is a fire hazard because the burning rate of combustible materials is increased., Question: How do you increase the burn rate? (A) an electric stove (B) exercise (C) burn wet materials (D) friction (E) add more oxygen (F) decrease amount of fuel (G) a hydraulic system (H) decrease the oxygen

Ex Output:

E