Detailed Instructions: 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").
Q: Fact1: a stopwatch is used to measure time, Fact2: Time can be measured with a clock or watch., Question: What is used to keep time? (A) compass (B) rain gauge (C) insulin (D) log (E) a scale (F) watch (G) CPU (H) barometer
A:
F