Last year, Paul invested $38,000 in Oil Town stock, $11,000 in long-term government bonds, and $8,000 in U.S. Treasury bills. Over the course of the year, he earned returns of 12.1 percent, 7.2 percent, and 4.1 percent, respectively. What was the nominal risk premium on Oil Town's stock for the year? 2.1 percent 4.9 percent 6.0 percent 8.0 percent 7.8 percent