How are SAN backups different from LAN and dedicated backups?

How are SAN backups different from LAN and dedicated backups?

A.
SAN backups require LAN bandwidth and server processing.

B.
Multiple servers can write to the same tape drives and shorten the backup window.

C.
Dedicated backups utilize the SAN resources most efficiently shortening backup windows.

D.
LAN backups utilize the LAN network efficiently and enhance manageability of multiple backups.