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: a rainbow is formed by refraction of light by separating light into all different colors, Fact2: Introduction A rainbow is often given as an everyday example of a spectrum., Question: A spectrum is formed by refraction of light by separating light into all different what? (A) categories (B) dyes (C) photons (D) pigments (E) light (F) colors (G) Energy. (H) energy
[A]: F

[Q]: Fact1: Flagella help prokaryotes move., Fact2: Bacteria are prokaryote cells., Question: Bacteria gets help moving from what? (A) environment (B) lysosomes (C) food (D) cytoplasm (E) rhizome (F) light energy (G) flagella (H) the skin
[A]: G

[Q]: Fact1: increasing heat causes thermal expansion, Fact2: Fire puts off heat., Question: What causes thermal expansion? (A) fear (B) cold (C) coal (D) energy (E) Sun (F) fire (G) ice (H) wind
[A]:
F