P starts from X towards Y, 5 km apart at 9 AM at a speed of 5 km/h. Q starts from X at 9.45 AM at a speed of 10 km/h. After reaching Y, P starts back towards X. Likewise, Q reaches Y and returns. When do they meet?

A

10:10 AM

B

10:12 AM

C

10:15 AM

D

10:20 AM