Answer:
The statement is true.
Step-by-step explanation:
Investment expenditure refers to the expenses incurred on account of creating capital assets.
If a good is produced but is left unsold or not used in the production process, then, they result in increased inventory, which is considered as an investment by the firm.
For the purpose of GDP accounting, unsold goods in inventory are treated as purchased by the firm from itself. As such, they form a part of investment expenditure in the accounting period.