Suppose that a company has sufficient capacity to fulfill an entire special order and that the variable manufacturing cost of producing a normal unit is equal to the variable manufacturing cost of producing a special unit. Which of the following Select one: + a. There is an opportunity cost related to foregone contribution margin from regular sales. b. The company should definitely accept the special order. c. The selling price of the special order will always be irrelevant to the decision. d. Variable manufacturing cost is irrelevant to the decision