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: Viruses cause many human diseases., Fact2: Some smallpox viruses are maintained in laboratories., Question: What can smallpox cause? (A) contamination (B) harmful substances (C) vaccines (D) photosynthesis (E) extinction (F) cellular respiration (G) Destroy crops (H) human disease
Example Output: H

Example Input: Fact1: cooking food requires adding heat energy, Fact2: Meat is a nutrient-dense food., Question: what requires adding heat energy to cook? (A) edible (B) corn (C) apples (D) coffee (E) making (F) trout (G) sugar (H) meat
Example Output: H

Example Input: Fact1: when water freezes , that water expands, Fact2: Water pipes can freeze and burst., Question: Pipes can burst because at low temperatures, water does what? (A) break off (B) moves (C) expand (D) evaporate (E) squeeze (F) flooding (G) boil (H) shrink
Example Output:
C