18. The most critical stage of a professional bowling competition. The 5th place player competes with the 3rd place winner, then the winner competes with the 1st place player, the winner gets the 2nd prize, and the loser gets the 3rd prize. How many different prize-winning sequences are there?
(A) 10. (B) 16. (C) 24. (D) 120.
(E) None of the above answers.
18
j3
18. There are 2 possible outcomes in each match, with a total of four matches. For each match result, the order of awarding is different, thus there are $2^{4}=16$ different awarding sequences. Therefore, the correct choice is (B).