An engineer must configure two Cisco Nexus 7000 series switches in the same data center to support OTV. Which command set completes the join interface configuration?

Option A, which typically includes commands to configure the overlay interface (e.g., `interface overlay 1`), designate the join interface (`otv join-interface Ethernet1/1`), and define the OTV control and data groups (`otv control-group`, `otv data-group`), is essential for establishing the OTV overlay tunnel and enabling the discovery and exchange of MAC reachability information between OTV edge devices.

Option B would be incorrect if it omits crucial OTV configuration elements, such as the `otv join-interface` command, or if it contains incorrect group definitions, preventing the OTV overlay from forming or functioning correctly.

Option C would be incorrect if it contains commands irrelevant to OTV join interface configuration or uses incorrect syntax, which would fail to achieve the desired OTV setup.

Option D would be incorrect if it contains commands that are contradictory to OTV best practices or include misconfigurations for the join interface, leading to OTV operational failures.