A hospital has notified defect in their life sustaining device. This device is critical for the functionality of another

[answerhappygod]

A hospital has notified defect in their life sustaining device.
This device is critical for the functionality of another power
supply system and device. The life sustaining device does not have
specific safety features and is an old model which has been with
the hospital for a long duration. To determine the residual risk
for an occasional probability, the manufacturer should apply to
which level of severity?
A) Marginal
B) Catastrophic
C) Critical