Once the component is replaced, how is the Storage Processor brought back into Normal mode?

In order to replace a faulty component, a service provider has placed one of the Unity Storage Processors into Service mode.

Once the component is replaced, how is the Storage Processor brought back into Normal mode?
A . Exit the Service Mode task
B . Reboot the Storage Processor
C . Reboot the storage system
D . Restart the Management software

Answer: B

Explanation:

If a single Storage Processor (SP) comes up in Service Mode, in Unisphere, you need to reboot the SP to return it to Normal Mode.

References: https://www.emc.com/collateral/TechnicalDocument/docu69355.pdf (page 4)