If the Dual Price for B₁ Is 2

Multiple Choice

If the dual price for b₁ is 2.7,the range of feasibility is 20 ≤ b₁ ≤ 50,and the original value of b₁ was 30,which of the following is true?

A) There currently is no slack in the first constraint.
B) We would be willing to pay up to $2.70 per unit for up to 20 more units of resource 1.
C) If only 25 units of resource 1 were available,profit would drop by $13.50.
D) All of these are correct.