For each of the following expenditures, indicate the type of account (asset or expense) in which the expenditure should be recorded. Explain your answers.
a. $15,000 annual cost of routine repair and maintenance expenditures for a fleet of delivery vehicles.
b. $60,000 cost to develop a coal mine, from which an estimated 1 million tons of coal can be extracted.
c. $124,000 cost to replace the roof on a building.
d. $70,000 cost of a radio and television advertising campaign to introduce a new product line.
e. $4,000 cost of grading and leveling land so that a building can be constructed.