As you are going through family records, you notice that your great-grandfather purchased 500 shares at $2.10 a share for a company called bubba gump shrimp. when you search the internet for this company, you found that they list the value of their stock at $154.16 per share. you decide to sell all the shares and invest this into a retirement fund paying 9% annual interest. if you were to sell all your great-grandfathers shares, how much would you have to invest in your retirement? a. $1,050.00 c. $6,937.20 b. $77,080.00 d.6,930.00