Suppose that the system from the previous question has been turned into a multiprogramming system with all the devices capable of operating independently. Suppose that two identical programs are being run concurrently. Each of those programs, when run alone (no other program being present in the system), spends (as before) 70% of itso time using the CPU, with the remaining 30% equally partitioned among the remaining three hardware components (the exact activity pattern is unknown), and completes in 10 minutes. What is the minimum amount of time needed to complete both programs concurrently in the multiprogramming system? a. 7 minutes b. 10 minutes c. 12 minutes d. 14 minutes e. 17 minutes f. 20 minutes