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: Streams may start with runoff or water seeping out of a spring., Fact2: Streams A stream is a sequence of characters., Question: a sequence of characters may start with runoff or what seeping out of a spring? (A) sodium (B) Joules (C) liquid (D) rivers (E) solutes (F) water (G) rain (H) SO2

A: F
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Q: Fact1: Nephrons are the structural and functional units of the kidneys., Fact2: Each nephron has a glomerulus., Question: things that have a what are the structural units of the kidneys? (A) organ (B) epidermal (C) critical organs (D) it needs them (E) bioaerosols (F) sensory neurons (G) glomerulus (H) layers of fat

A:
G
****