Examine the image.

What is this service fixture used for when repairing an iMac (Late 2012)?

A.
It is used to protect the iMac housing from damage.

B.
It is used to support the logic board when removed from the iMac.

C.
It supports a VESA mount adapted iMac when it is being serviced.

D.
It is required for the proper alignment of the iMac LCD panel to the rear housing.