What are the Avamar 6 install and upgrade rules for Gen1 through Gen4 node technology?

What are the Avamar 6 install and upgrade rules for Gen1 through Gen4 node technology?
A . Gen4/3 can be installed new or upgraded.
Gen2 can be upgraded only.
Gen1 cannot be installed new or upgraded.
B . Gen4 can only be installed new.
Gen3/2 can be installed new or upgraded.
Gen1 cannot be installed new or upgraded.
C . Gen4 can be installed new or upgraded.
Gen3/2/1 can only be upgraded.
D . Gen4 can only be installed new.
Gen3/2 can only be upgraded.
Gen1 cannot be installed new or upgraded.

View Answer

Answer: A