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: keeping food cold is used for keeping food fresh, Fact2: A refrigerator that keeps food cold., Question: What is a refrigerator used for? (A) Electrical energy (B) A place to hang magnets (C) Cooling your home (D) staying warm (E) A doorstop (F) electricity (G) energy usage (H) Keeping food fresh
[EX A]: H

[EX Q]: Fact1: if heat is conducted to an object then that object will become hot, Fact2: Metals vary in their capacity to conduct heat., Question: What can happen if a metal is heated? (A) change chemical composition (B) refract energy (C) they bend (D) It expands (E) electricity (F) Relieve pain (G) maintains core temperature (H) becomes hot
[EX A]: H

[EX Q]: Fact1: evaporation can be used for separating a solute from a solvent in a solution, Fact2: For example, in salt water, salt is the solute and water is the solvent., Question: What can separate salt from water? (A) vaporization (B) shaking (C) evaporation (D) mouth of rivers (E) salinity (F) freezing (G) Heat energy (H) nothing
[EX A]:
C