a. National Telephone and Telegraph (NTT) Company common stock currently sells for $50 per share. NTT is expected to pay a $5 dividend during the coming year, and the price of the stock is expected to increase to $54 a year from now. Determine the expected (ex ante) percentage holding period return on NTT common stock. Round your answer to two decimal places. % b. Suppose that one year later, NTT's common stock is selling for $66 per share. During the one-year period, NTT paid a $5 common stock dividend. Determine the realized (ex post) percentage holding period return on NTT common stock. Round your answer to two decimal places. % c. Repeat Part b given that NTT's common stock is selling for $47 one year later. Round your answer to two decimal places. % d. Repeat Part b given that NTT's common stock is selling for $42 one year later. Round your answer to two decimal places. %