On April 1, Sign Company buys 4,000 shares of Polk common stock for $61,500. On October 1, Sign sells 1,000 shares of Polk stock for $20,5do. Prepare journal entries for the purchase and sale of the Polk common stock. (Credit account titles are automatically Indented when the amount is entered. Do not Indent manually. Record journal entries in the order presented in the problem.) Date Account Titles and Explanation Debit Credit