In 2016, the Allen Company had consulting revenues of $1,000,000 while operating costs were $750,000. In 2017, Allen will be introducing a new service that will generate $150,000 in sales revenues and $60,000 in operating costs. Assuming no changes are expected for the other services, the differential revenue for 2017 will be A) $90,000. B) $60,000. C) $150,000. D) $250,000