Refer to the accompanying balance sheet for the first national bank of bunco. all figures are in millions. suppose that this bank currently has $6 million in excess reserves and that customers of this bank collectively write checks for cash at the bank in the amount of $6 million. as a result, the bank's excess reserves diminish to:

Consider a treasury bill with a rate of return of 5% and the following risky securities: security a: e(r) = .15; variance = .0400 security b: e(r) = .10; variance = .0225 security c: e(r) = .12; variance = .1000 security d: e(r) = .13; variance = .0625 the investor must develop a complete portfolio by combining the risk-free asset with one of the securities mentioned above. the security the investor should choose as part of her complete portfolio to achieve the best cal would be a. security a b. security b c. security c d. security d