You will be given a definition of a task first, then some input of the task.
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: Evan is picking up rocks on the beach. Some rocks are very basic small ones, and others are large, clumpy stones with different textures. The rocks that are more difficult to identify had amounts of metamorphism that were 
 Choices: A)more extreme 
B)less extreme
Output:
more extreme