You are an administrator of a switched network and your goal is to reduce some of the administrative overhead on your network. You plan on achieving this by configuring a new VLAN for each department in your network. However, you need to share the VLAN information across numerous switches throughout your network. Which of the following would allow you accomplish this?（）

1. A STP
2. B GVRP
3. C SNMP
4. D VTP 正确答案
5. E DHCP