A.) A bank expects to raise $30 million in new money if it pays a deposit rate of 7%. It can raise $60 million in new money if it pays a deposit rate of 7.5%. It can raise $80 million in new money if it pays a deposit rate of 8% and it can raise $100 million in new money if it pays a deposit rate of 8.5%. This bank expects to earn 9% on all money that it receives in new deposits. What deposit rate should the bank offer on its deposits, if they use the marginal cost method of determining deposit rates?