In a race of 50 participants, E is ranked 12th from the top. If F is ranked 5 places below E, what is F's rank from the bottom?

Answer: A. 34th
E's rank is 12th from the top, so F's rank is 12 + 5 = 17th from the top. Therefore, F's rank from the bottom is 50 - 17 + 1 = 34.