Which could be an appropriate solution for assigning a unique office mode IP address to secure client users?

Which could be an appropriate solution for assigning a unique office mode IP address to secure client users?

A.
Configure a DHCP server with IP reservation using the information gathered by the utility vpn macutil.

B.
Edit $ PWDIA/conf/SCM_ assignment. conf on the management server with the correct user name and office mode ip address

C.
Create a DHCP resource with the fixed IP address to use name mapping.

D.
Fixed office mode IP can be configured as a user property in smart dash board