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 shines a light through both wool and cotton and determines that cotton is more dense then wool, which material will the light move faster through? 
 Option1: wool 
 Option2: cotton 
 Explanation: The more dense the medium, the slower the light moves.
[A]: wool


[Q]: Question: Jerry weighs 200 pounds. Polly weighs 120 pounds. Who has more inertia? 
 Option1: Jerry 
 Option2: Polly 
 Explanation: Objects with greater mass have greater inertia.
[A]: Jerry


[Q]: Question: Jeff was pushing a steel weight that weighs 25kg and a steel weight that weighs 10kg. Which weight contains less thermal energy? 
 Option1: 25kg 
 Option2: 10kg 
 Explanation: An object with more mass has greater thermal energy than an object with less mass because it has more atoms.
[A]:
10kg