Best Buy reported the following numbers (in millions) for the years ending January 28, 2017, and February 3, 2018. 2017 2018 Net income $ 1,000 Dividends 409 Total assets $ 13,856 13,049 Total equity 4,709 3,612 a. What are the internal and sustainable growth rates? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. What are the internal and sustainable growth rates using ROE b and ROA b and the end of period equity (assets)? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) c. What are the growth rates if you use the beginning of period equity (assets) in this equation? (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.)