Expenses incurred for the installation of plant and machinery will be treated as

Revenue expenditure
Deferred revenue expenditure
General expenditure
Capital expenditure

The correct answer is: Capital expenditure.

Capital expenditure is the cost of acquiring or improving fixed assets, such as land, buildings, and equipment. It is recorded as an asset on the balance sheet and is depreciated over time.

Revenue expenditure is the cost of goods or services that are consumed in the current period and are not expected to provide benefits in future periods. It is recorded as an expense on the income statement.

Deferred revenue expenditure is the cost of goods or services that are consumed in the current period but are expected to provide benefits in future periods. It is recorded as an asset on the balance sheet and is amortized over time.

General expenditure is the cost of goods or services that are not directly related to the production of goods or services. It is recorded as an expense on the income statement.

In the case of expenses incurred for the installation of plant and machinery, these expenses are capital expenditure because they are incurred to acquire an asset that will be used in the business for more than one year. The asset will be depreciated over time, and the depreciation expense will be recorded on the income statement.