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 measuring atoms and she finds out that one atom is smaller then another, what does that imply about the distance of electrons from the nucleus of that atom? 
 Option1: closer together 
 Option2: farther away 
 Explanation: In bigger atoms, valence electrons are farther from the nucleus.
[A]: closer together


[Q]: Question: Bob is testing samples of ocean water from different places. The sample of water from off India's coast has less dissolved carbon dioxide, than the sample of water from off the United States' coast. Therefore, the water from _____ coast is more acidic. 
 Option1: India's 
 Option2: United States' 
 Explanation: With higher levels of dissolved carbon dioxide in ocean water, the water becomes more acidic.
[A]: United States'


[Q]: Question: Carlos knows that there is less ozone in the stratosphere, and goes out on a sunny day. He puts on sunscreen knowing that the UV rays can reach the ground 
 Option1: less 
 Option2: more 
 Explanation: With less ozone in the stratosphere, more UV rays reach the ground.
[A]:
more