Teacher: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).
Teacher: Now, understand the problem? Solve this instance: Paragraph: Solar power is expensive, but as demand increases technology improves and costs decrease.
 Question: If demand for solar power were increase, the power would become _____ expensive. 
 Choices: A)less 
B)more
Student:
less