Division P of Turbo Corporation Has the Capacity for Making

Division P of Turbo Corporation has the capacity for making 75,000 wheel sets per year and regularly sells 60,000 each year on the outside market.The regular sales price is $100 per wheel set,and the variable production cost per unit is $65.Division Q of Turbo Corporation currently buys 30,000 wheel sets (of the kind made by Division P) yearly from an outside supplier at a price of $90 per wheel set.If Division Q were to buy the 30,000 wheel sets it needs annually from Division P at $87 per wheel set,the change in annual net operating income for the company as a whole,compared to what it is currently,would be:

A) $600,000
B) $225,000
C) $750,000
D) $135,000
E) $700,000