A runner starts running from a point at 5 : 00 am at the speed of 10 km/hr. Second runner starts from the same point at 8 : 00 am in the same direction with a speed of 15 km/hr. At what time of the day will the second runner will overtake the first runner?

A

2 : 00 pm

B

12 : 30 pm

C

12 : 00 pm

D

1 : 00 pm