B is ranked 5th from the bottom in a group of 25 people. If B swaps positions with C, who is ranked 12th from the top, what will be B's new rank from the top?

Answer: C. 13th
B is 21st from the top (25 - 5 + 1). After swapping with C, who is 12th from the top, B will be 12th, and C will be 21st. Thus, B's new rank from the top is 13th.