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").

[EX Q]: Fact1: ultraviolet light causes sunburn, Fact2: Furthermore, sunburn can cause premature aging and skin cancers., Question: What can ultraviolet light cause? (A) chemical changes (B) Cold skin (C) killing insects (D) Healthy skin (E) disease (F) Skin cancer (G) symptoms (H) Low temperatures
[EX A]: F

[EX 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
[EX A]: C

[EX Q]: Fact1: Soil can be depleted of nutrients., Fact2: Potassium carbonate is a valuable nutrient for plants., Question: Soil can be depleted of which of the following? (A) Potassium carbonate (B) Chlorophyll (C) neon (D) sedimentary rocks (E) carbon monoxide (F) helium (G) Organic compounds (H) vegetation
[EX A]:
A