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: Viruses are so small that they can be seen only with an electron microscope., Fact2: Electron microscope is developed in Germany., Question: viruses are so small that they can be seen only with a device developed where? (A) A computer (B) sunlight (C) Light (D) germany (E) retina (F) at home (G) canada (H) taiwan

A: D
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Q: Fact1: fog is formed by water vapor condensing in the air, Fact2: Water vapor rises into the atmosphere., Question: what does the atmosphere do before turning into fog (A) adapt (B) rest (C) Rise (D) fall (E) cooled (F) snow (G) swirl (H) Lift

A: C
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Q: Fact1: condensation is when change from a gas into a liquid by reducing heat energy, Fact2: All temperatures are measures of heat energy., Question: What is when something changes from a gas into a liquid by reducing what is measured in temperature? (A) Water expanding (B) condensation (C) forces (D) movement (E) Evaporation (F) sweating (G) motion (H) boiling

A:
B
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