Investment - Total Rate of Return. Layton purchased 630 shares of Gustin Inc. at $1106 and sold them a year later at $12.19. With 3% commission rate on each transaction and a dividend of $2.21 per share throughout this year, what was the return on his investment? O a. 23.20% O b. 22.35% O c. 3.80% O d. 19.40%