15-3. (Cash conversion cycle) Historical data for the sales, accounts receivable, inventories, and accounts payable for the Crimson Mfg. Company follow: a. Calculate Crimson's days of sales outstanding and days of sales in inventory for each of the 5 years. What has Crimson accomplished in its attempts to better manage its investments in accounts receivable and inventory? b. Calculate Crimson's cash conversion cycle for each of the 5 years. Evaluate the firm's overall management of its working capital