Process P1, P2 and P3 with execution time of 6 ms, 4 ms and 2 ms respectively enter in ready state together in order P1, P2, P3. Calculate the waiting and cements of Process P1. Assuming no wait time due to I/O and round robin scheduling with time slot of 2 ms.

A

6 ms, 12 ms

B

6 ms, 10 ms

C

4 ms, 4 ms

D

4 ms, 6 ms