9) In a class, there are 30 students. The teacher divides them into 5 teams of 6 students and then organizes a team competition. At the end of the competition, she distributes candies to all the students, ensuring that each member of the winning team receives double the number of candies compared to the students in the other teams. Knowing that the teacher distributes a total of 540 candies, how many candies does each winner receive?
(A) 15
(B) 18
(C) 27
(D) 30
(E) 36.
9) The answer is $(\mathbf{D})$.

If each loser receives $N$ candies and each winner receives $2 N$, with 6 winners and 24 losers, the total number of candies distributed must be $6 \times 2 N + 24 \times N = 36 N$. Setting $36 N = 540$ gives $N = 15$, so each winner receives 30 candies.