Consider the following abbreviated financial statements for Parrothead Enterprises: PARROTHEAD ENTERPRISES 2017 and 2018 Partial Balance Sheets Assets Liabilities and Owners' Equity 2017 2018 2017 2018 Current assets $ 1,390 $1,630 Current liabilities $ 544 $ 601 Net fixed assets 4,950 6.172 Long-term debt 2,650 2.910 PARROTHEAD ENTERPRISES 2018 Income Statement Sales $16.018 Costs 7,270 Depreciation 1,453 Interest paid 448 a. b. What is net working capital (NWC) for 2017 and 2018? (Do not round intermediate calculations.) If the tax rate is 21 percent, what is the operating cash flow or OCF? (Do not round intermediate calculations.) What is the net capital spending (NCS) in 2018? (Do not round intermediate calculations.) d. What is the cash flow to creditors? (Do not round intermediate calculations.) c. a. Net working capital in 2017 Net working capital in 2018 b. Operating cash flow c. Net capital spending d. Cash flow to creditors