You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

[Q]: Question: Mona lives in a city that doesn't use much oil. If the mayor of that city decides to change their policy and the city begins using more oil, what happens to the amount of pollution generated by the city? 
 Option1: increases 
 Option2: decreases 
 Explanation: Greater use of oil and other fossil fuels causes more pollution.
[A]: increases


[Q]: Question: As two objects move apart, the force of gravity between them 
 Option1: increases 
 Option2: decreases 
 Explanation: Objects that are closer together have a stronger force of gravity between them.
[A]: decreases


[Q]: Question: Rick had a rock (Rock A) from 1000 feet beneath the crust's surface. He later dug 3000 feet deeper and got a second rock (Rock B). Which rock is likely younger? 
 Option1: Rock A 
 Option2: Rock B 
 Explanation: Older rocks are at the bottom and younger rocks are at the top.
[A]:
Rock A