Question 5 1 pts You purchased 1,000 shares of XYZ stock on margin at $80 per share with an initial margin of 40%. XYZ stock price suddenly drops to $50 and you received a margin call. You want to partially liquidate your position and repay the loan with the proceeds in order to meet the maintenance margin requirement of 30%. You need to sell at least (rounded up to the nearest whole number). 867 shares 863 shares 869 shares 865 shares