ABC Ltd., expects to need a total of 2m over the coming year. The interest rate is 10% and the fixed cost of a security transaction is 150. Using an appropriate cash management model, determine: (i) ABCs optimal cash balance; (ii) The number of transfers that will be required over the next year; (iii) How often the cash balances will require replenishing? (iv) The opportunity costs, trading costs and total costs.