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: erosion of soil has a negative impact on the environment, Fact2: Weathering and erosion continue to shape it today., Question: What has a negative impact on the environment? (A) harmful substances (B) weathering of soil (C) saving water (D) planting trees (E) deforestation (F) massive damage (G) recycling (H) enormous damage to homes
Example Output: B

Example Input: Fact1: cold fronts cause thunderstorms as they pass by, Fact2: If cold air replaces warm air, it is called a cold front., Question: What does cold air replacing warm air cause? (A) Greenhouse gases (B) Pollution (C) Dehydration (D) thunderstorms (E) steady barometer readings (F) hypothyroidism (G) constant air pressure (H) stagnant air temperature
Example Output: D

Example Input: Fact1: Viruses are not cells., Fact2: Tissues are made of cells., Question: Viruses are not what (A) tissue (B) protected (C) expelled (D) disease (E) humans (F) A drug. (G) parasites (H) dangerous
Example Output:
A