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.
Answer:
pls post a picture so we could answer your question
Explanation:
I'm not sure about the Great Britain and Us conflict but I do know that the Mexican American war was the war for the possession of Texas? That may be a contrast you may include. I hope this helps.