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: The more curved the surface of a lens is, the more it refracts light.
Question: Jeff built a lens with the highest refraction possible. The lens is likely _____ curved.
Choices: A)very
B)not
very