Refer to the exhibit. What must be do

Refer to the exhibit. What must be done on router RTA to ensure that EIGRP works effectively in a Frame Relay multipoint environment?（）

• A Issue the command bandwidth 224 on the physical interface.
• B Issue the command bandwidth 56 on the physical interface.
• C Issue the command bandwidth 224 on each subinterface.
• D Issue the command bandwidth 56 on each subinterface.