You will be given a definition of a task first, then some input of the task.
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 the light that passes through it.
 Question: In a science class, the professor demonstrates refraction to the class. First, the professor shows a curved lens from a binocular, and then a flat pane of glass, demonstrating that 
 Choices: A)the curved lens refracts more light 
B)the flat pane refracts more light.
Output:
the curved lens refracts more light