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.

[EX Q]: Question: If you fill a large canister with gas from a smaller canister will the density 
 Option1: increase 
 Option2: decrease 
 Explanation: If we take a certain amount of gas from one container and place it into another, larger container, the gas expandsto fill the larger container. The same mass of gas is now in a larger volume, the gas now has a lower density.
[EX A]: decrease

[EX Q]: Question: Evan is a farmer and needs to plant on a slope. For a faster flow of water, he should choose a slope that is 
 Option1: steeper 
 Option2: gentler 
 Explanation: A gentle slope favours slower flow of surface water, reduces erosion, and increases availability of water to plants.
[EX A]: steeper

[EX Q]: Question: Dan is swimming deeper and deeper into water. The water the deeper he goes will be 
 Option1: younger 
 Option2: older 
 Explanation: Deeper aquifers typically contain older 'fossil water.'
[EX A]:
older