Battery Plus, Inc. has total assets of $642,000. There are 60,000 shares of stock outstanding with a market value of $19 a share. The firm has a profit margin of 6.4 percent and a total asset turnover of 1.36. What is the price-earnings ratio? a. 15.10 b. 20.40 c. 23.91 d. 27.56 e. 30.20