Abby buys 70 shares of Tesla stock for $160 on May 3,2023 per share on margin. The initial margin is 55%, and the maintenance margin requirement is 40%. If she sells the stock for $175 per share last week, what is her percentage return (ignore commissions, interest payments, and other relevant costs, round to the nearest whole number)? O 18% 21% O 23% 17%