What is one benefit of PVST+?

A.
PVST+ supports Layer 3 load balancing without loops.

B.
PVST+ reduces the CPU cycles for all the switches in the network.

C.
PVST+ allows the root switch location to be optimized per VLAN.

D.
PVST+ automatically selects the root bridge location, to provide optimized bandwidth usage.

Explanation:
Per VLAN Spanning Tree (PVST) maintains a spanning tree instance for each
VLAN configured in the network. It means a switch can be the root bridge of a VLAN while another
switch can be the root bridge of other VLANs in a common topology. For example, Switch 1 can
be the root bridge for Voice data while Switch 2 can be the root bridge for Video data. If designed
correctly, it can optimize the network traffic.