Answer:
d. We should accept the offer because it would increase our net operating income
Step-by-step explanation:
A differential analysis only includes relevant costs. This means that only costs that are affected by the special order are considered. In this case, variable costs are the only relevant costs, since fixed costs will occur regardless of the acceptance or rejection of the special order. This special order will increase the company's operating profits by ($65 - $15) x 100 = $5,000