You sold short 100 shares of common stock at \$45 per share. The initial margin is 50%. Your initial investment was1/33 You sold short 100 shares of common stock at \$45 per share. The initial margin is 50%. Your initial investment was\$7,200. b \$4,800.\$12,000.\$2,250.none of the aboveGiải thíchChọn đáp án D