What is a benefit of enabling tandem multicast replication for SPBM?
A. Multicasts follow a better path to each destination than they would with head-end replication.
B. An ingress SPBM switch does not have the load of replicating and forwarding many copies of a multicast.
C. An ingress SPBM switch can load-balance multicasts over multiple equal-cost paths to a destination, even when the multicasts belong to the sameISID.
D. SPBM switches can send multicasts as both multicasts and unicasts, increasing reliability for the transmission.
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