Two cities A and B are 135 km apart on a straight track. One car starts from A at 8 a.m. and travels towards B at 25 km/h. Another car starts from B at 9 a.m. and travels towards A at a speed of 30 km/h. At what time will they meet?

A

11 a.m.

B

10 a.m.

C

10.45 a.m.

D

11.30 a.m