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: Reaction time was measured with a stopwatch in minutes and seconds., Question: What is used to measure minutes? (A) light (B) barometer (C) stopwatch (D) weater (E) thermometer (F) lamphreys (G) feedback (H) sound
[A]: C

[Q]: Fact1: Cancer is a disease in which cells divide out of control., Fact2: Cancer is also caused by a mutation., Question: What can mutations lead to in which cells divide out of control? (A) Smoking (B) resistance (C) a disease (D) viruses (E) AIDS (F) bacteria (G) Leptospirosis (H) cigarettes
[A]: C

[Q]: Fact1: an electric stove transforms electrical energy to heat energy, Fact2: When using an electric stove, match the pan size to the cooking element., Question: What is used to cook with a pan? (A) Heat energy (B) Solar energy (C) leaves (D) energy (E) trees (F) bushes (G) heating liquids (H) oysters
[A]:
A