How can the administrator reconfigure the CNA ports for 16Gb Fibre Channel SFPs?

A Unity storage system is installed with 10 Gb optical SFPs in CNA ports 4 and 5 of both Storage Processors. The storage administrator has had a request from a user to connect to the storage system through Fibre Channel.

How can the administrator reconfigure the CNA ports for 16Gb Fibre Channel SFPs?
A . Configure all CNA ports for 16Gb Fibre Channel
B . Configure CNA port 4 of SPA and SPB as 10Gb optical
Configure CNA port 5 of SPA and SPB as 16 Gb Fibre Channel
C . Configure CNA port 4 and 5 of SPA as 10 Gb optical
Configure CNA ports 4 and 5 of SPB as 16 Gb Fibre Channel
D . CNA ports cannot be reconfigured once they are committed

Answer: D

Explanation:

Once you set the network protocol on the CNA ports you cannot switch to a different network protocol.

References: https://www.emc.com/collateral/TechnicalDocument/docu60144.pdf (page 5)