Train A, which runs at a speed of 90 km/h, starts from Station Y at 8 a.m. Train B, which runs at a speed of 120 km/h, starts from Station Y on the same route at 8.10 a.m.. If Train B catches up with Train A at 8.40 a.m. at Station Z, then what is the distance between Stations Y and Z?

A

54 km

B

62 km

C

60 km

D

50 km