it a true or false question

a) Plant assets are classified as long-term assets, while intangible assets are treated as current assets b) Intangible assets include patents, copyrights and natural resources c) Intangible assets with indefinite useful lives will be not be amortized d) The cost of land should be depleted over its useful life e) The cost of a natural resource should be expensed (depleted) over its useful life