Elimination of white space at the end of question papers (i.e. vertical centering of quizzes) (Support #863)

Hello, I'm using AMC in the "separate answer sheet" mode and I kindly ask you if it is possible to eliminate the white space at the end of the question sheets, making sure that the quizzes are always vertically centered in the sheet, regardless of the combinations created by the function \AMRandomseed{1237893}.
I also ask you how to proceed so that the alternatives A - B - C - D can be divided and inserted between two different pages (for example A - B at the end of a page and C - D at the beginning of the next page), so I could save a lot of paper, since I will only scan the answer sheets and not the question sheets. Many thanks to whoever replies.