Are my answers correct?

27. You bought one hundred shares of ABC stock for $30.00 per share using 70% margin. ABC currently pays $2.00 annual cash dividends. The interest on the margin loan is nine percent per year. Assume you hold the stock for one year. Ignoring commissions, what is your annualized rate of return on invested capital if you sell the stock for thirty-four dollars per share? A) 29.1% B) 24.1% C) 16.2% D) 21.7% *E) None of the given answers is correct 28. You purchased one hundred shares of MSFT for fifty dollars per share using a sixty percent initial margin. The price of the stock falls to thirty dollars per share. What is the amount of your margin call if a maintenance margin is thirty percent? *A) 0 B) 212 C) 216 D) 221 E) None of the given answers is correct