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").

Input: Consider 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

Output: C

Input: Consider Input: Fact1: nuclear reactions in stars causes stars to produce light, Fact2: And, of course, the Sun is a star., Question: What in the sun causes the sun to produce light? (A) energy of moving objects (B) hydrogen and oxygen (C) heat energy (D) water (E) solar rays (F) rotation (G) nuclear reactions (H) kinetic energy

Output: G

Input: Consider Input: Fact1: Chloroplasts contain the green pigment chlorophyll., Fact2: Chloroplasts are found in the cells of leaves and in the surface cells of stems., Question: cells of leaves and surface cells of stems contain what pigment chlorophyll? (A) rings (B) blue (C) orange (D) bushes (E) legumes (F) small (G) red (H) green
Output: H