A trucking company requires different numbers of drivers on different days of the week. The number of drivers needed each day is given in the table below. Each driver works 5 consecutive days and then gets two days off. The company wants to minimize the number of total drivers on their payroll. Which of the following statements is true about this optimization problem?

Day of week Minimum number of drivers required

Monday 15

Tuesday 10

Wednesday 11

Thursday 13

Friday 16

Saturday 12

Sunday 10

a.We need to restrict our decision variables to integers.

b.This problem is best solved graphically.

c.This problem does not have a solution.

d.This is a non-linear optimization problem.