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: chemical weathering causes iron in rock to oxidize, Fact2: Oxides Oxides Oxides are elements combined with oxygen., Question: Chemical weathering causes iron in rock to combine with what? (A) uranium (B) oxygen (C) cartilage (D) nothing (E) an object (F) vacuum (G) energy (H) heat

Ex Output:
B


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: friction causes an object to lose energy, Fact2: Friction is a force that dissipates energy., Question: what dissipates energy? (A) aqueous solution (B) chlorofluorocarbons (C) carbon dioxide (D) opposing force (E) Evaporation (F) hydrogen and oxygen (G) sweating (H) fossil fuels

Ex Output:

D