I have max 10 min to this question

An economist calculates that an owner-managed firm has incurred the following costs over the course of a year. $ (000) wages of two employees 150 fee paid to wife for secretarial services 20 opportunity cost of owner's time 30 materials 80 rent 30 marketing fees 20 interest on bank loans 25 interest forgone on finance provided by owner 15 By how much does total cost as defined by an economist exceed the total cost as defined by an accountant? $15 000 $30 000 :54 $45 000 O $65 000