The linear programming problem has an unusual characteristic. Select a graph of the solution region for the problem and describe the unusual characteristic. Find the minimum  value of the objective function (if possible) and where it occurs.
?
z = x + 3y
?
Constraints:
?
        x ? 0
        y ? 0
x + 2y ? 4
2x + y ? 4
?

A. ?

Minimum at (0, 2): 6


B. ?

Minimum at (2, 0): 2


C. ?

Minimum at (0, 0): 0


D. ?

Minimum at (2, 2): 8


E. ?

No minimum



Answer: C

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