Which of the following items (that all generate future ...
单项选择题Which of the following items (that all generate future economic benefits, and whose costs can be measured reliably), is an intangible non-current asset?
1 Computer hardware owned by a business
2 Operating software that operates the computer hardware in (1)
3 A patent bought by a business
4 An extension to an office building owned by a business
A、All four items
B、1, 2 and 4 only
C、1 and 2 only
D、3 only