$E$$4$

Benefit C

$137\mathrm{.}5$

$$

$80$

$57\mathrm{.}5$

If the coefficient for Activity $2$ in the objective function changes to $$400,$ then the objective function value:

$$ a$)$ will increase by $$7,500.$

b$)$ will increase by $$2,750.$

c$)$ will increase by $$100.$

d$)$ will remain the same.

e$)$ can only be discovered by resolving the problem.