Roy purchased 3,500 shares of Ernst stock for $225,678 one year ago. The stock pays annual dividends of $.50 a share. Today, he sold all of his shares for $77.82 a share. What is his total return on this investment?

a. 21.12 percent

b. 21.25 percent

c. 21.33 percent

d. 21.47 percent

e. 21.58 percent