Which STP protection feature does HP recommended against rogue switches?

A.
Root Protection should be enabled on access layer switches.

B.
BPDU Protection should be enabled on edge ports and uplink ports.

C.
Root Protection should be enabled on access and aggregation layer switches.

D.
BPDU Protection should be enabled on edge ports.

Explanation:
We want to enable BPDU protection on any “edge ports”, or ports that are connected to end user
devices (PCs, printers, etc.) — any device that should not be sending out STP BPDU’s. Without
BPDU protection, a malicious (or ignorant) user could plug a switch into our network and alter the
spanning tree topology.