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: Flowing water can slowly dissolve carbon in sedimentary rock., Fact2: Rivers and streams are bodies of fresh, flowing water., Question: What can slowly dissolve carbon in sedimentary rock? (A) hydrocarbons (B) acetic acid (C) precipitation (D) evaporation (E) rivers and streams (F) puddles (G) ponds (H) nitrogen
Example Output: E

Example Input: Fact1: recycling has a positive impact on the environment, Fact2: Steel is a recycled and recyclable product., Question: What has a positive impact on the environment? (A) animals (B) bushes (C) energy (D) peachleaf willow (E) oysters (F) using steel (G) Solar energy (H) Green beans
Example Output: F

Example Input: Fact1: Evolution occurs in response to a change in the environment., Fact2: Climate change is likely to have a significant impact on the global environment and human society., Question: A significant evolutionary response might be the result of what? (A) Plant reproduction (B) Greenhouse gasses (C) climate change (D) rapid expansion (E) Plants growth (F) competition (G) Chemical energy (H) Electrical energy
Example Output:
C