About MUX VLAN, which is correct?

About MUX VLAN, which is correct?
A . MUX VLAN is divided into master VLAN and slave VLA
B . The master VLAN and slave VLAN can’t communicate with each other.
C . In MUX VLAN, slave VLAN are classified into interworking and isolated slave VLA
D . Ports in the interworking VLAN can communicate with each other.
E . Isolation ports on the slave VLAN can communicate with each other, and ports on the master VLAN can’t communicate with each other.
F . The master VLAN and slave VLAN can’t communicate with each other.

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Answer: B