The Substitution Rates

Multiple Choice

The substitution rates

A) decrease with each iteration of the simplex method.
B) tell us the number of units of a basic variable that must be removed from the solution for another variable to enter the basis.
C) tell the amount of one resource that can be substituted for another.
D) tell us the amount of a resource that must be used to gain another unit of profit.
E) None of the above