What is not true about a resource constraint in a linear programming model?

a) They delimited the region that consists of all feasible solutions.

b) Many times, are associated with limited resources.

c) On the right side, can have only inequalities signs.

d) The units (dollars, quantities, weights, etc.) on the left, must be the same as the parameter’s unit on the right.

e) In the optimal solution, the amount used in the left of a constraint must be equal to the amount to the right of it.

f) c and e.

g) a and c.