$E$$4$ Resource C

$18$

$$

$40$

$1E+30$

If the coefficients of Activity $1$ and Activity $2$ in the objective function are both increased by $$10,$ then:

$$ a$)$ the optimal solution remains the same.

b$)$ the optimal solution may or may not remain the same.

c$)$ the optimal solution will change.

d$)$ the shadow prices are valid.

$q,$ e$)$ None of the choices is correct.