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

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

A.
Enable VTP pruning

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

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

D.
Cycle the switch power.