On February 1, 2014, Andover Inc. had excess cash on hand. The controller suggested to management that the company buy $300,000 of U.S. Treasury bonds selling at 102 and paying 8 percent interest. Interest payments on these bonds are made semiannually on January 1 and July 1. Prepare entries to record the February purchase of U.S. Treasury bonds and the subsequent collection of interest on July 1, using (a) the asset approach, ib) the revenue approach