You must configure an MX Series device to receive and forward a mixture of single-tag and dual-tag frames on interface xe-0/0/0.
In this scenario what will accomplish goal?
A.
xe-0/0/0 { 
flexible-vlan-tagging; 
}
B.
xe-0/0/0 { 
stacked-vlan-tagging; 
}
C.
xe-0/0/0 { 
vlan-vci-tagging; 
}
D.
xe-0/0/0 { 
vlan-tagging; 
}