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: a breathing mask is used for keeping harmful particles from entering the respiratory system, Fact2: Pulmonologists treat lungs and respiratory systems., Question: what does a breathing mask keep harmful particles from entering? (A) skin (B) tissue (C) stomach (D) h2o (E) H20 (F) air (G) lungs (H) gas masks
[EX A]: G

[EX Q]: Fact1: a pan is used for cooking food by heating food in it on a stove, Fact2: Food, like chicken and potatoes are recommended., Question: Chicken and potatoes can be cooked in a pan on what? (A) a paper towel (B) on another chicken (C) a stove (D) in the freezer (E) less water (F) heat (G) plates (H) loose soil
[EX A]: C

[EX Q]: Fact1: boiling means change from a liquid into a gas by adding heat energy, Fact2: Water, for example, is a liquid., Question: What changes water into a gas by adding heat energy? (A) Energy. (B) precipitation (C) movement (D) a solute (E) coal (F) transpiration (G) boiling (H) ice
[EX A]:
G