Which of the following costs are most likely variable costs? Select all that apply. Group of answer choices

Screws used to fasten legs to a table

Monthly water bill for manufacturing plant

shipping costs on purchased materials

Monthly payment to security guard company, based on 1/12 of annual contract price.

Which of the following will be a source of cash flows for a shareholder of a certain stock? i. sale of the shares at a future date ii. the firm in which the shares are held paying out cash to shareholders in the form of dividends iii. the firm in which the shares are held increasing the total number of shares outstanding through a stock split