Need help on these multiple choice asap

4. You are determined to save $20 every month until you are 36 years old. Then, you will use these savings to buy something for your parents - a gift they will appreciate. To accurately estimate how much money will be saved over this period of time, you will use this formula: O O NPV PV PVA FVA O O 5. Capital projects ought to be considered most carefully, because: Once capital construction starts, it cannot be reversed The amount of money involved is too large to justify mistakes The degree of uncertainty is much higher than with any short-term projects All of the above statements are true. O