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: 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
[EX A]: C

[EX Q]: Fact1: global warming is when worldwide temperature increases, Fact2: Global warming is caused by carbon dioxide trapped in the atmosphere., Question: What does carbon dioxide cause? (A) skateboards (B) Greenhouse gases (C) Worldwide temperature increase (D) major threat to health (E) direct damage to the lungs (F) running (G) a lot of human deaths (H) Temperature decrease
[EX A]: C

[EX Q]: Fact1: beads of water are formed by water vapor condensing, Fact2: An example of water vapor is steam., Question: What forms beads of water?  (A) Necklaces. (B) Steam. (C) Glass beads . (D) a wave (E) tiny (F) a solute (G) rain (H) Bracelets.
[EX A]:
B