Which of the following statements are true? (a) An increase of a business’ sales volume automatically induces more inventories (b) The ending inventory is always a good proxy for the firm’s average...

Which of the following statements are true? (a) An increase of a business’ sales volume automatically induces more inventories (b) The ending inventory is always a good proxy for the firm’s average inventory level (c) The weight of inventory as a percentage of total assets is a function of the firm’s business sector (d) Firms should accumulate more inventories for paying their liabilities