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: A scientist sees that some galaxies are closer together than before, so they know that the universe's expansion is 
 Option1: less 
 Option2: more 
 Explanation: As the Universe expands, galaxies move further and further apart.
[A]: less


[Q]: Question: Do electric cars pollute more or less than gas cars? 
 Option1: more 
 Option2: less 
 Explanation: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.
[A]: less


[Q]: Question: The sun exerts gravitational force on all the planets, which has a lower gravitational force 
 Option1: earth 
 Option2: mars 
 Explanation: The further objects are away from each other, the smaller the gravitational force.
[A]:
mars