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: However, the energy is diluted as an electromagnetic wave travels farther from its source because it spreads out over an ever-larger area.
 Question: Karen is observing an electromagnetic wave and how it travels from its source. This wave travels near to its source, because the energy is diluted 
 Choices: A)more 
B)less
less