A supervisor needs help from clerks to complete four tasks. The first task is recording orders/receipts, the second is scanning the third is copying, and the fourth is checking inventory. The estimated time for each clerk to do each task is given in the table below. 1 2 3 4 Clerk A 90 SO 40 20 B 120 60 30 50 c 110 60 70 Which of the following constraints represent the assignment of task 3? OXA3 + XB3+ Xc3 s1 + XB3 + c3-1 XA3 + XB3+ Xc3 20 + + c 0 + +