ABN Company provided the following information on selected transactions: Cash receipts of dividends $ 100 Purchases of inventories 1,000 Dividends paid to stockholders 200 Cash payment of interest 300 Proceeds from issuing preferred stock 800 Proceeds from sale of equipment 275 Purchase of building 250 Collections from customers 3,000 Retirement of debt 750 Cash payments of expenses 500 Calculate cash flows from (a) operating activities, (b) investing activities and (c) financing activities.