Any one can help me these questions?I really need your help thank you in advance for your help

soned Question 11 (1 point) Assume you sell short 500 shares of common stock at $50 per share, with initial margin at 50%. What would be your percentage margin and rate of return on the short sale if you repurchase the stock at $44 per share? a) 66,67%: 12% bl 70.45%: 24% c) 40%: 16.67% Od 70.45%: 12% e) 66.67%; 24% Question 12 (1 point Seved Assume you sell short 500 shares of common stock at $50 per share with initial margin at 50%. What would be your percentage margin and rate of return on the short sale if you repurchase the stock at $56 per share? al 33,93% -24% b) 36,36 -12% a 25% -33,33% d) 36,36%: -24% e) 33.93%: -12% Question 13 (1 point) Savest An investor sold Capital One stock short at $93.54. The investor's losses could be limited by placing a al stop-loss order with price limit of $89 b) stop buy order with a price limit of $98 stop-buy order with a price limit of $89 d di limit-sell order with price limit of $98 e) limit-buy order with price limit of $89