You buy 40 shares of Amazon at a price of $2,000 per share using $50,000 of your own cash and a loan from your broker to finance the remainder of the purchase price. If Amazon's stock price appreciates 10%, what would be your Return on Investment (ROI) without taking into account transaction costs?

a. 5%

b. 6.25%

c. 16%

d. 20%

Note: use excel for working/solutions