If the Following Represents Decision Variables for the Number of Hours

Multiple Choice

If the following represents decision variables for the number of hours employee i works in week j ,​ then to indicate that the number of working hours of 4 employees in week 3 should not exceed 160 hours,we must have the constraint

A)  the cell in row 3 column 4 must be <= 160 
B)  the sum of the column 1 cells must be <= 160 
C)  the sum of the row 3 cells must be <= 160 
D)  the sum of the column 3 cells must be <= 160