Q: 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 less efficient, it would produce _____ usable energy. 
 Choices: A)more 
B)less
A:
less