Teacher: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").
Teacher: Now, understand the problem? Solve this instance: Fact1: biofuel is used to produce electricity by burning, Fact2: Biofuels include ethanol, methanol, biodiesel, biocrude, and methane., Question: what produces electricty by burning? (A) cactuses (B) ethanol (C) engines (D) cigars (E) organisms (F) cigarettes (G) Conifers (H) ferns
Student:
B