You decide to purchase 200 shares of the SPY ETF using 50% margin. The current price of the SPY ETF is $340 per share. Assume that all interest rates are zero. If the price of the SPY ETF rises to $400, what are the rates of return on the SPY shares (assuming no distributions) and on your investment, respectively? O A. 19.41% and 35.29% B. 19.41% and 38.82% O C. 17.65% and 17.65% O D. 17.65% and 35.29%