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: Megan had two charged metal balls that she was analyzing. If she decreases the charge of the balls, the electrostatic force between them 
 Option1: decreases 
 Option2: increases 
 Explanation: The more charged the objects are, the stronger the electrostatic force between them.
[A]: decreases


[Q]: Question: Something that is smaller and moving will have _____ energy than something small. 
 Option1: less 
 Option2: more 
 Explanation: Therefore, an object with more mass has greater thermal energy than an object with less mass, even if their individual atoms are moving at the same speed.
[A]: less


[Q]: Question: As the train approached the intersection and blew its horn, expanding the wavelengths of the sound, did the frequency of the horn 
 Option1: increase 
 Option2: decrease? 
 Explanation: This means that as wavelengths get shorter, more waves move past a particular spot in the same amount of time.
[A]:
decrease?