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.

Ex Input:
Question: If Jim moves his telescope from a mountaintop to Death Valley, a location with much air above it, what will happen to the amount of interference from the atmosphere? 
 Option1: increase 
 Option2: decrease 
 Explanation: Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.

Ex Output:
increase


Ex Input:
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.

Ex Output:
United States'


Ex Input:
Question: By adding twenty more resistors to the series circuit in series, the total resistance of the circuit was 
 Option1: increased 
 Option2: decreased 
 Explanation: In a series circuit, the resistance increases as more resistors are added in series.

Ex Output:

increased