15. Bank of America's stock price was $29 per share in January 2021. One year later, in January 2022, its share price becomes $46. In addition, the stock has paid dividends of $0.88 in this one-year period. (a) What is the holding period rate of return on the stock from January 2021 to January 2022? [3 points] (b) Consumer Price Index (CPI) has increased from 262 to 282 from January 2021 to January 2022. Considering the inflation, what is the real rate of return on the stock? (3 points]