Additions and improvements
a. typically only benefit the current accounting period.
b. normally involve immaterial expenditures.
c. occur frequently during the ownership of a plant asset.
d. increase the company's investment in productive facilities.

Which of the following is one of the five fundamental questions? which products will be in scarce supply and which in excess supply? who should appoint the head of the central bank? how much should society save? correct what goods and services will be produced?