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: extreme heat and pressure change rock into metamorphic rock, Fact2: Slate is a metamorphic rock., Question: What rock is formed by extreme heat and pressure (A) erosion (B) crust (C) calcite (D) Slate (E) dead (F) forces (G) fibrous (H) complex
Example Output: D

Example Input: Fact1: a flashlight requires a source of electricity to produce light, Fact2: Lanterns and flashlights are sources of light used for camping., Question: What does a lantern use a source of electricity for? (A) heat energy (B) staying warm (C) enclose light (D) produce light (E) absorb heat (F) reflect light (G) to move people (H) protect them
Example Output: D

Example Input: Fact1: bacteria can cause people to become ill, Fact2: Most people turn to a doctor when they are ill or injured., Question: Bacteria can cause people to do what? (A) sweating (B) turn inside out (C) harm physicians (D) contracting (E) decrease stamina (F) turn to a doctor (G) Dehydration (H) become doctors
Example Output:
F