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 fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain

A: B
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Q: Fact1: insulated material can be used for keeping warm, Fact2: An insulated cup with a cover is great for keeping beverages warm., Question: How do you keep a cup hot? (A) less water (B) electricity (C) heat energy (D) adding heat (E) energy usage (F) insulation (G) squeeze (H) energy

A: F
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Q: Fact1: when a hemisphere is tilted away from the sun , that hemisphere receives less direct sunlight, Fact2: For example, when the tilt increases, the Northern Hemisphere in winter receives less heat., Question: What happens when we receive less sunlight? (A) Springtime (B) sweating (C) Heat (D) apoptosis (E) autumn (F) Winter (G) air cools (H) It's brighter

A:
F
****