What distinguishes a 'smart' (web-managed) switch from both an unmanaged switch and a fully managed (enterprise CLI) switch in terms of capabilities and appropriate use cases?

• A.Smart switches are enterprise switches with a simplified CLI designed for network engineers who prefer graphical interfaces over command-line configuration
• B.Smart switches provide web GUI management with basic VLAN, port mirroring, basic QoS, SNMP, and LACP - more than unmanaged (zero configuration) but less than enterprise CLI switches (which add full ACL, 802.1X, OSPF/EIGRP, RADIUS, advanced STP tuning, scripting). Smart switches suit SMBs needing basic network segmentation without the cost/complexity of enterprise gear
• C.Smart switches can perform Layer 3 routing between VLANs using SVIs, while both unmanaged and enterprise switches are Layer 2 only