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 valence electrons are far from an atom's nucleus, the atom is likely 
 Option1: bigger 
 Option2: smaller 
 Explanation: In bigger atoms, valence electrons are farther from the nucleus.
Example Output: bigger

Example Input: Question: Hassan and Ratna each received new automatic cameras as presents. To test their new cameras, Hassan took a picture of the beach that afternoon, while Ratna waited until it was dark outside to take a picture of a python in the moonlight. The shutter of whose camera stayed open shorter? 
 Option1: Hassan 
 Option2: Ratna 
 Explanation: A camera shutter stays open longer in dim light to let more light in.
Example Output: Hassan

Example Input: Question: As we dig less deep in the search for fossils the fossils get 
 Option1: younger 
 Option2: older 
 Explanation: Fossils found at the lowest layer of rock would be the oldest, as these would have been buried for the longest time, whereas fossils found closer to the surface would be buried more recently and therefore be younger.
Example Output:
younger