Refer to the exhibit.
A network architect plans to set up intelligent Resilient Framework (IRF) virtual devices as shown in the exhibit, and configure LACP MAD on each IRF. What else should the architect plan in this solution to ensure that the IRF devices work correctly?
A. the correct LLDP TLV extensions enabled on the link aggregations between the IRF virtual devices
B. a link dedicated to LACP MAD between each member of each IRF virtual device
C. a different domain ID for each IRF virtual device
D. a link dedicated to LACP MAD between the core IRF and each access later IRF