Figure $15\mathrm{.}36$ shows the Solver Sensitivity Report for

the student investment scenario$$from Problems $7$ and

$14$ from Chapter $13.$ Using only the information in

the Sensitivity Report, answer the following ques$-$tions, explaining what information you used in the

Sensitivity Report.

a$.$ How much would the return on stock B have to

be in order for the optimal solution to invest fully

in that stock?

b$.$ How much would the return on stock C have to

increase in order to invest fully in that stock?

c$.$ Explain the value of the shadow price for the

total investment constraint. If the student could

borrow $$1,000$ at $8\%$ a year to increase her total

investment, what would you recommend and

why $?$