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;}
Answer: A