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: a barometer is used to measure air pressure, Fact2: Uses Elemental mercury is used in thermometers, barometers, and pressure-sensing devices., Question: What type of mercury is used to measure air pressure? (A) weater (B) lamphreys (C) tubular organ (D) Type O (E) Otoacoustic (F) the same (G) Elemental (H) marine
Student:
G