Due to a labor strike, Eric is considering purchasing the subcomponents from an outside supplier for $250 per unit rather than paying the 10% increase in direct labor costs demanded by the union. If Eric purchases the subcomponent from the outside supplier, how much will profit differ from what it would be if it manufactured the subcomponents with the increase in direct labor cost?

a. $30,000 less b. $20,000 less c. $10,000 less d. $20,000 more

The answer is D but I need to know how to solve this problem! thank you so much :')