Bob Orleans invested $5,000 and borrowed $5,000 to purchase shares in Verizon Communications. At the time of his investment, Verizon was selling for $12 a share. a. If Bob paid a commission of $20, how many shares could he buy if he used only his own money and did not use margin? Number of shares b. If Bob paid a commission of $40, how many shares could he buy if he used his $5,000 and borrowed $5,000 on margin to buy Verizon stock? Number of shares C. Assume Bob did use margin and paid a commission of $40 to buy his Verizon stock. Also, assume he paid another $40 to sell his stock and sold the stock for $22 a share. How much profit did he make on his Verizon stock investment? (Use the rounded number of shares computed in part b. Round your answer to 2 decimal places.)