P16.8 Charlene Weaver likes to speculate with preferred stock by trading on movements in market interest rates. Right now, she believes the market is poised for a big drop in rates. Accordingly, she is thinking seriously about investing in a certain preferred stock that pays $6.97 in annual dividends and is currently trading at $91.36 a share. What rate of return will she realize on this investment if the market yield on the preferred drops to 5.34% within two years? What if the drop in rates takes place in one year? If the market yield on the preferred drops to 5.34% within 2 years, the rate of return will be %. (Round to two decimal places.) If the market yield on the preferred drops to 5.34% in 1 year, the rate of return will be %. (Round to two decimal places.)