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 efficient a device is, the greater the percentage of usable energy it produces.
Question: If a device were to become more efficient, it would produce _____ usable energy.
Choices: A)more
B)less
Output:
more