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: RJ diamond is more resistant to weathering while Tony has some sandstone which is less resistant to weathering. Whose rock will likely not last as long? 
 Option1: RJ's 
 Option2: Tony's 
 Explanation: Different types of rocks weather at different rates. More resistant types of rocks will remain longer.

Ex Output:
Tony's


Ex Input:
Question: John was viewing a patient's vital signs at the hospital. He could see clearly that the less oxygen to the cells, the pulse rate would become 
 Option1: Higher 
 Option2: Lower 
 Explanation: This causes the delivery of less oxygen to the cells, and this stimulates the heart rate via adrenalin, so that pulse rate increases in an effort to deliver enough oxygen to cells.

Ex Output:
Higher


Ex Input:
Question: People usually go snow skiing in the mountains because higher altitudes are _____ and are more likely to have snow. 
 Option1: warmer 
 Option2: colder 
 Explanation: Glaciers often form in the mountains because higher altitudes are colder and more likely to have snow that falls and collects.

Ex Output:

colder