Answer (D) is correct. A company must maintain a level of working capital sufficient to pay bills as they come due. Failure to do so is technical insolvency and can result in involuntary bankruptcy. Unfortunately, holding current assets for purposes of paying bills is not profitable for a company because they usually offer a low return compared with longer-term investments. Thus, the skillful management of working capital requires a balancing of a firm’s desire for profit with its need for adequate liquidity.