Use the following table of returns from 1926 through 2017: Series Large stocks Small stocks Long-term corporate bonds Long-term government bonds U.S. Treasury bills Inflation Average return 12.1% 16.5 6.4 6.0 3.4 3.0 a. Determine the return on a portfolio that was equally invested in large-company stocks and long-term corporate bonds. (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) b. What was the return on a portfolio that was equally invested in small stocks and Treasury bills? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) a. Portfolio Return b. Portfolio Return