What is a characteristic of Layer 3 roaming?

Choice A is incomplete and doesn't fully capture the essence of Layer 3 roaming's benefits regarding IP address retention, unlike option D.

Layer 3 roaming capabilities are dependent on mobility group configurations on wireless LAN controllers, not specifically on whether controllers run Single Sign-On (SSO).

The primary benefit and characteristic of Layer 3 roaming is that clients do not need to obtain a new IP address when roaming between APs in different Layer 3 networks.

Layer 3 roaming, also known as inter-subnet roaming or mobility, ensures that a client keeps its original IP address even when moving from an AP in one IP subnet to an AP in a different IP subnet. This is achieved through mobility tunnels, typically anchoring the client's session to the controller where it first associated, thereby providing a seamless user experience.