how can you erase the VTP database of VLANs on a CISCO IOS switch running in VTP server mode?

Assuming default setting, how can you erase the VTP database of VLANs on a CISCO IOS switch running in VTP server mode?

A.
Enable VTP pruning

B.
From privileged mode, erase the startup configuration file, then reload.

C.
From privileged mode, erase the vlan dat file, then reload.

D.
Cycle the switch power.