Which statement is correct about MSTP?

Which statement is correct about MSTP?

A.
MSTP enables mapping multiple independent spanning-tree instances onto one physical
topology.

B.
MSTP enables dynamic discovery of Layer 2 neighbors.

C.
MSTP dynamically manages VLAN registration in a LAN.

D.
MSTP uses stacked VLAN tags to extend a Layer 2 Ethernet connection between multiple
sites.