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: 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

Answer: D

Question: Fact1: Carbon may be stored in sedimentary rock for millions of years., Fact2: Limestone is a type of sedimentary rock., Question: What element can be stored in limestone for millions of years? (A) oxygen (B) Energy (C) matter (D) carbon (E) sodium (F) helium (G) rock salt (H) heat

Answer: D

Question: Fact1: the force of water against the seed coat causes a root to emerge from a seed, Fact2: When the seeds are watered, they grow into a huge root, and then the root sprouts flowers., Question: Where do flowers come from? (A) bushes (B) A seed (C) The ocean (D) An egg (E) spring (F) Tropical (G) Sand (H) pollen

Answer:
B