Answer:
D.The right hand side value of 150 for constraint 3 can be increased by at most 50 without changing the optimal corner point.
Explanation:
To maximize 10X1 + 7X2 + 5X3; subject to the constraints: X1 + X2 + X3 <= 100; 2X2 + X3 >= 70; -X2 + X3 <= 150, the right hand side value of 150 for constraint 3 can be increased by at most 50 without changing the optimal corner point.