Briefing Apple Knowledge

What is this tool used for when servicing a MacBook Pro (Retina, 13-inch, Early 2013)?

What is this tool used for when servicing a MacBook Pro (Retina, 13-inch, Early 2013)?

A.
Installing Thin, Multi-Pin Horizontal cables.

B.
Disconnecting the Vertical Insert Connectors (JST).

C.
Removing the interposer.

D.
Flipping up the locking lever connectors.