Why should a used ICB never be installed in another engine?

A.
Each ICB contains device-specific data which would corrupt critical saved values in another engine.

B.
The ICB is hard-keyed to the device it is installed on, and attempting to install it in another engine
could damage the engine or ICB.

C.
The ICB installs an encrypted key on the formatter. Replacing the ICB corrupts the formatter key,
necessitating a formatter replacement.

D.
There is a risk that the low-voltage power supply would burn up a replacement ICB.