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: Rougher surfaces have more friction between them than smoother surfaces.
 Question: A piece of glass has _____ friction than a piece of sandpaper. 
 Choices: A)more 
B)less
Student:
less