Consider 3 processes A, B, and C to be scheduled as per SRTF scheduling. The process A is known to be scheduled first and when A has been running for 7 units of time the process C has arrived. The process C has run for 1 unit of time, then the process B has arrived and completed running for 2 units of time. Then what could be the minimum burst time of processes A and C?

a)11, 3

b)12,3

c)11,4

d)12,4