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: measuring the hardness of minerals requires scratching those materials, Fact2: To figure out the hardness of a mineral, the Moh's scale of hardness is used., Question: the Moh's scale of hardness is used by doing what to the materials (A) heating (B) tool extensions (C) protection (D) classified (E) scratching (F) as a base (G) how they move (H) Cladistics
[EX A]: E

[EX Q]: Fact1: heating salt water causes the water to evaporate while the salt remains, Fact2: Salt is produced by the evaporation of sea water., Question: how is salt produced? (A) flow of electrons (B) solid, liquid, gas (C) chemical messengers (D) Solutions (E) Physical weathering (F) It gets heated up (G) near the shoreline (H) heating water
[EX A]: H

[EX Q]: Fact1: burning fossil fuels increases the carbon in the atmosphere, Fact2: Carbon dioxide is produced by the burning of fossil fuels such as coal, oil and natural gas., Question: What enters the atmosphere when coal, oil, and natural gas is burned? (A) Heat (B) toxins (C) Cars (D) Gas (E) h2o (F) tar (G) Carbon (H) energy
[EX A]:
G