Please I want to know to answer this one using calculator.

Stockett, Inc. has Prepared its third quarter budget and provided the following data: The cash balance on June 30 is projected to be $4, 500. The company has to maintain a minimum cash balance of $5, 000 and is authorized to borrow at the end of each month to make up any shortfalls. It may borrow in increments of $5, 000 and has to pay interest every month at an annual rate of 4%. All financing transactions are assumed to take place at the end of the month. The loan balance should be repaid in increments of $5, 000 wherever there is surplus cash. How much will the company have to borrow at the end of August? A) $5, 000 B) $15, 000 C) $20, 000 D) $10, 000