Rao Corporation has the following balance sheet. How much net operating working capital does the firm have $ 10 $ 20 30 20 50 Cash Short-term investments Accounts receivable Inventory Current assets Net fixed assets 55 $ 95 40 Accounts payable Accruals Notes payable Current liabilities Long-term debt Common equity Retained earnings Total liab. & equity $130 0 105 30 Total assets $ 235 50 $ 235 Select the correct answer. O a. $57.20 O b. $55.80 Og $60.00 d. $58.60 e. $54.40