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").

Ex 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

Ex Output:
C

Ex Input:
Fact1: All chemical reactions require activation energy to get started., Fact2: Fire is a chemical reaction., Question: What does fire require to get started? (A) an engine (B) activation energy (C) water (D) energy usage (E) direct energy (F) dogs (G) activated almonds (H) adding heat

Ex Output:
B

Ex Input:
Fact1: evaporation can be used for separating a solute from a solvent in a solution, Fact2: An aqueous solution has water as the solvent., Question: Evaporation can be used for separating a solute from a water in what? (A) molecule (B) Condensation (C) atom (D) aqueous solution (E) Heat energy (F) vaporization (G) evaporation (H) aqueous chemical

Ex Output:
D