问题：

[单选] Refer to Topic TestKing.com in iPAD document.What happens to the network when TestKingX is reconnected and a trunk exists between the two switches?（）

A . All VLANs except the default VLAN will be removed from all switches.
B . All existing switches will have the students, admin, faculty, Servers, Management,Production, and no-where VLANs.
C . The VLANs Servers, Management, Production, and no-where will replace the VLANs on SwX.
D . The VLANs Servers, Management, Production, and no-where will be removed from existing switches.