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: fossils are formed when layers of sediment cover the remains of organisms over time, Fact2: Plants and animals are organisms., Question: What forms when plants are covered in layers of sediment over time? (A) Conifers (B) watershred (C) fossils (D) H2O (E) Echinoids (F) bubbles (G) loose soil (H) bones
Example Output: C

Example Input: Fact1: planting trees has a positive impact on an ecosystem, Fact2: An ecosystem contains many habitats., Question: doing what with trees has a positive impact on habitats (A) making tables (B) chopping down (C) planting (D) watershed (E) earth (F) bloom time (G) growth (H) timbering
Example Output: C

Example Input: Fact1: Reptiles are a class of tetrapod vertebrates that produce amniotic eggs., Fact2: All reptiles produce eggs with a waterproof shell full of amniotic fluid., Question: Reptiles are a class of tetrapod vertebrates that produce eggs with a what? (A) kinetic energy (B) Chemical energy (C) the body's largest organ (D) heat energy (E) Epidermis (F) epidermis and dermis (G) waterproof shell (H) rapid expansion
Example Output:
G