Pipe A and pipe B running together can fill a cistern in 6 minutes. If B takes 5 minutes more than A to fill it, then the time in which A and B will fill that cistern separately will be, respectively, _____________.

A

15 min and 10 min

B

15 min and 20 min

C

25 min and 20 min

D

10 min and 15 min