Given the task definition and input, reply with output. You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).

Paragraph: The more extreme the amount of metamorphism, the more difficult it is to tell what the original rock was.
 Question: If pressure has exerted more force on a rock and increased it's metamorphism, would it be 
 Choices: A)easier to determine what the original rock was 
B)harder to determine what the original rock was?
harder to determine what the original rock was?