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: tidal energy can be used to produce electricity, Fact2: Tidal caves are formed by the energy of the rising and falling tides., Question: what can produce electricity? (A) rivers (B) animal transport (C) tidal caves (D) Nematoda (E) rays or beams (F) animals (G) cactuses (H) photons

Ex Output:
C

Ex Input:
Fact1: oil is formed by layers of sediment pushing down on decomposing algae, Fact2: When the algae dies it is decomposed by bacteria., Question: Oil is formed by layers of sediment pushing down on what? (A) bacteria (B) nutrients (C) amoebae (D) tunicates (E) oysters (F) coral reefs (G) mussels (H) Bodily water

Ex Output:
A

Ex Input:
Fact1: if fossils of an animal or plant are found in a place then that animal or plant used to live in that place, Fact2: Wetlands are important habitats for animals., Question: Where can fossils be found (A) sea squirts (B) Nematoda (C) loose dirt (D) Sediment (E) Conifers (F) coral reefs (G) Echinoids (H) wetlands

Ex Output:
H