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: Solar power is expensive, but as demand increases technology improves and costs decrease.
 Question: Ryan noticed that a unpopular solar panel is _____ expensive than it was. 
 Choices: A)more 
B)less
more