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: If Mona is comparing the erosion rates of two rocks and she notices that granite is softer then marble, which rock will water erode faster? 
 Option1: granite 
 Option2: marble 
 Explanation: The water erodes the softer rock faster than the harder rock.
[A]: granite


[Q]: Question: John was looking at rocks in the valley and noticed something. The less resistant the rocks he looked at were, the amount they remained was 
 Option1: Shorter 
 Option2: Longer 
 Explanation: Different types of rocks weather at different rates. More resistant types of rocks will remain longer.
[A]: Shorter


[Q]: Question: Kate is going to diffuse a liquid and a gas. The liquid is diffused last, because the particles with it are 
 Option1: closer together 
 Option2: further apart 
 Explanation: This is also called diffusion, and the process is much faster in gases than in liquids, because the particles in gases are further apart.
[A]:
closer together