Mega Towers adds an additional floor to its skyscraper. The cost of the modification is best described as: an ordinary repair that will increase current assets on the balance sheet. an maintenance cost that will be immedlately expensed on the income statement. a capital expenditure that will increase total assets on the balance sheet. a capital expenditure that will be immediately expensed on the income statement. an expense since it does not extend the useful life of the asset