PART B [9 Marks] Management of Best Inc wants to maintain a monthly cash balance in July 2021 of $20,000. At the start of the month, the cash balance is $11,800. Expected cash receipts for the month of July 2021 are $105,000 and cash disbursements for the same are anticipated to be $122,000. Required: a) How much cash, if any, should be borrowed to maintain the desired cash balance? b) Explain the terms relevant cost and irrelevant cost [4 Marks] 13 Marks] c) State two (2) arguments why budgeting is not always effective as an accounting tool. [2 Marks]