Well, what type of books do you like to read and why? Make sure they're good enough reasons to contemplate, like maybe your reason is controversial. Sounds like a class discussion, good luck. :)
Im guessing its B, Because it just makes more sense! I went in there and read it aloud using both words (A and B) B made more sense. With an object being measured, such as a lemon, to make a quart of lemon juice, Id say you'd use the word number. Amount is not a word used for an object or measurement.
Your question has been heard loud and clear.
The learning and recall strategy which involves connecting new information with previously acquired knowledge is called 'meaningful learning'
Thank you.