Which of the Following Represents a Capital Expenditure

Which of the following represents a capital expenditure?

A) issuing paychecks to workers
B) paying for advertising on a local radio station
C) purchasing raw materials to be used in the production of a firm's product
D) purchasing a building to be used for office space
E) Capital expenditures are major investments in long-term assets such as land,buildings,and equipment;or,intangible assets such as patents.