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.

Example Input: Question: If Mona is bouncing radar waves off a test car when training to be a policewoman and she notices the frequency of the waves returning to her radar gun is lower then it was before, what is happening to the car she is pointing the gun at? 
 Option1: decreasing in speed 
 Option2: increasing in speed 
 Explanation: A: As the car approaches the radar gun, the reflected microwaves get bunched up in front of the car. Therefore, the waves the receiver detects have a higher frequency than they would if they were being reflected from a stationary object. The faster the car is moving, the greater the increase in the frequency of the waves.
Example Output: decreasing in speed

Example Input: Question: A decrease in body size will cause a concomitant _____ in its surface area to volume ratio. 
 Option1: increase 
 Option2: decrease 
 Explanation: Size restriction: The final body size is limited because as the body size increases, the surface area to volume ratio decreases.
Example Output: increase

Example Input: Question: Mona is creating some vases out of clay. If she increases the mass of her vases by adding clay to them, what happens to the amount of matter they contain? 
 Option1: decrease 
 Option2: increase 
 Explanation: The greater the mass of an object, the more matter it contains.
Example Output:
increase