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").
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Question: 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

Answer: B


Question: Fact1: Most modern gymnosperms are trees with woody trunks., Fact2: Gymnosperms are the plants that are known as evergreens., Question: What trees have woody trunks? (A) trees (B) vegetation (C) evergeeen (D) more abundant (E) it needs them (F) graptolites (G) Leeuwenhoek (H) cacti

Answer: C


Question: Fact1: most canyons are formed by flowing rivers through erosion over long periods of time, Fact2: Erosion was monitored by means of erosion pins., Question: How do we track canyon changes? (A) LEDs (B) wind (C) forces (D) river (E) slow (F) Pins (G) Raft (H) three

Answer:
F