Pipes A and B can fill a tank in 10 hours and $$13\frac{1}{3}$$ hours, respectively. Pipe C is an emptying pipe. When all the three pipes are opened together, the tank is filled in 8 hours. In how many hours will Pipe C alone empty 25% of the tank?

A

4 hours

B

3 hours

C

5 hours

D

6 hours