Which statement is true about spanning tree and HP Comware and HP Provision switches?

A.
A Comware switch automatically auto-senses edge ports.

B.
A ProVision switch requires the active region-configuration command to activate changes.

C.
A Provision switch, by default, uses non-standard port costs in spanning tree calculations.

D.
A Comware switch, by default, uses non-standard port costs in spanning tree calculations