Refer to the exhibit. An engineer must configure router R1 to allow only NETCONF connections from the management VLAN. Which command completes this configuration?

The command `ip access-group netconfacl in` applies an access list to a specific interface for inbound traffic, which is a general packet filtering method but not the direct, service-specific way to control access to the NETCONF-YANG agent itself.

The command `netconf-yang ipv4 access-list name netconfacl` is the specific global configuration command used on Cisco IOS XE devices to apply an IPv4 access list named `netconfacl` directly to the NETCONF-YANG service, thereby restricting incoming NETCONF connections to only those permitted by the ACL.

The command `ip http secure-server` enables the HTTPS server for web-based management access (e.g., GUI), and does not pertain to securing NETCONF connections.

The command `ip access-group netconfacl out` applies an access list to a specific interface for outbound traffic, which is incorrect for restricting incoming NETCONF connections.