Use the data from Big Box Toy Company's 2020 and 2021 Financials to answer the questions below. Dividends Per Share $0.55$0.60 a. Calculate the components of the DuPont formula for each year. b. Calculate ROE for each year using the components of the DuPont Formula c. Calculate plowback ratio and sustainable growth rate for each year. d. How does their 2021 sustainable growth rates compare to revenue growth and earnings per share growth from 2020 to 2021 ? Would you suggest any changes to dividend policy based on your comparisons