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: Active immunity results when an immune response to a pathogen produces memory cells., Fact2: Pathogens are germs that cause disease., Question: Active immunity is when an immune response occurs after a germ produces what? (A) harmful substances (B) bioaerosols (C) rapid expansion (D) Allergies (E) anemia (F) it needs them (G) Chemical energy (H) memory cells
[EX A]: H

[EX Q]: Fact1: Evaporation of sweat uses energy, and the energy comes from body heat., Fact2: When sweat comes in contact with the skin it is cooled as the sweat evaporates., Question: energy leaves from what when sweat contacts with skin (A) radiation (B) heat energy (C) expelled (D) vapors (E) body heat (F) heat produced (G) conduction (H) metal
[EX A]: E

[EX Q]: Fact1: a car engine usually converts gasoline into motion and heat through combustion, Fact2: Gasoline vapors are highly combustible., Question: Car engines convert highly combustible vapors into what? (A) Energy. (B) tires (C) passengers (D) motion (E) movement (F) heat (G) wheels (H) energy
[EX A]:
D