Chris Was the Business Manager for a Real Estate Firm

Multiple Choice

Chris was the business manager for a real estate firm earning an annual salary of $40,000.Then Chris decided to become a consultant.Chris hired an administrative assistant at $15,000 per year and rents office space (utilities included) for $3,000 per month.Chris earned $100,000 in total revenue the first year as a consultant.
Chris's opportunity cost of running her own business is ______ which is the _______.

A) $15,000;implicit cost
B) $51,000;explicit cost
C) $40,000;implicit cost
D) $51,000;economic cost