The corner point solution method

Question $4$ options:

A$)$

requires that the profit from half of the corners of the feasible region be compared.

B$)$

requires that all corners created by some of the constraints be compared.

C$)$

will not provide a solution at an intersection or corner where a non$-$negativity constraint is involved.

D$)$

will always provide one, and only one, optimum.

E$)$

will yield the same results as you get from successful using solve to find your answer.