Lisa buys a window from Home Depot $($HD$)$ and places it in her truck. When she gets to her home, she installs the window using $8$ inch screws, permanent glue and long lasting insulation. If John buys Lisa$$s real property which includes the home where she installed her window:

The window is included because it is part of the real property.

The window is excluded because it is a trade fixture.

The window is included because it is acquired by accession.

The window is excluded because it is personal property.