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: The air gets thicker when it is 
 Option1: hot 
 Option2: cold 
 Explanation: Increasing air temperature decreases atmospheric pressure.

Ex Output:
cold


Ex Input:
Question: James stares at the volcano and saw the rocks melt because of the _____ temperatures. 
 Option1: high 
 Option2: low 
 Explanation: Temperature increases with depth inside the Earth, so melting of rocks is more likely to occur at greater depths.

Ex Output:
high


Ex Input:
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.

Ex Output:

wool