Texts: Solve the linear programming problem: Minimize C = Bx + 5y, Subject to 6x + 7y ≤ 42, x + y ≥ 20.
What is the minimum value of C? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The minimum value of C is _______. (Type an integer or a fraction.)
B. There is no minimum value of C.
What are the coordinates of the corner point where the minimum value of C occurs? Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The coordinates are _______. (Type an ordered pair.)
B. There is no minimum value of C.