Problem $17$: Use Solver to create a Sensitivity Report for question $18$ at the

end of Chapter $3$ and answer the following questions:

a$)$ Is the optimal solution unique? How can you tell?

b$)$ Which location is receiving the fewest cars?

c$)$ Suppose a particular car at location $1$ must be sent to location $3$ in order to

meet a customer$$s request. How much does this increase costs for the

company?

d$)$ Suppose location $6$ must have at least eight cars shipped to it$.$ What impact

does this have on the optimal objective function value?