7. Bill had 322 stamps. He can put 23 stamps on each page of an album. He estimated he wou need 300 ÷ 25 or 12 pages in all. Is it reasonable that Bill buys 12 album pages? A. No, he rounded 23 up and 322 down, so he will need more than 12 pages. B. No, he only needs ii pages. C. No, he rounded, so he will need less than 12 pages. D. Yes.