HELP PLEASE

w Question completion Status: QUESTION 14 4 points Save Answer You sold short 100 shares of common stock at $45 per share. The initial margin is 50%. Your initial investment was O $4,800 O $7,200 O $12,000 O $2250. 4 points Save Answer market(s) QUESTION 15 Investors trade previously issued securities in the O derivatives O secondary O primary O primary and secondary QUESTION 16 4 points market(6) Now issues of securities are sold in the secondary O primary O primary and secondary O over-the-counter