Below Are Some Financial Data for the Do Drop in Convenience

Below are some financial data for the Do Drop In convenience store.
The owners have put $40,000 into the business and they worked a total of 80 hours during the week.Savings accounts are currently paying 5.2% interest and the going wage rate is $8 per hour.
-Refer to the information above to answer this question.What are the week's total implicit costs for the Do Drop In?

A) $40.
B) $680.
C) $6,300.
D) $6,900.
E) $7,580.