What is causing this problem?

Whenever you connect a Layer 2 switch to the xe-0/0/0 interface of the LC2 Node device in the
server Node group of a QFabric system, the interface xe-0/0/0 on LC2 is disabled. What is causing
this problem?

A.
The xe-0/0/0 interface on the LC2 Node device is not configured for family Ethernet switching.

B.
The LC2 Node device is not connected to the QFabric system.

C.
Interfaces on the server Node group can connect only to servers.

D.
The interface xe-0/0/0 of the LC2 Node device detects incoming BPDUs from a Layer 2 switch.