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.
The answer is a) <span>survive the hanging.</span>
When doing something like this, some find it useful to annotate the text by putting in notes and explanations of what is being said.
(Like pastors at a church when giving the message, or a comedian needing to remember some little things)
It basically just helps the reader not forget side notes or little things that can make the others either more entertained or more helpful.