Which wide gap separates Saturn's A ring from its B ring?

Which wide gap separates Saturn's A ring from its B ring? The Cassini Division separates Saturn's A ring from its B ring.

The Cassini Division is a broad, relatively dark region in Saturn's main ring system. It was identified by Giovanni Domenico Cassini in 1675 during telescopic observations from the Paris Observatory. From Earth, the division can often be seen with a good small telescope as a dark line between the brighter A and B rings.

Despite its name and appearance, the Cassini Division is not completely empty. It contains diffuse ring material, including smaller particles and dust, and its density is much lower than in the neighboring bright rings. Gravitational interactions with Saturn's moons help shape the distribution of particles in this region.

The Cassini Division is often confused with the Encke Gap and Keeler Gap. Those are narrower gaps within the A ring, whereas the Cassini Division is the major broad separation between the A and B rings. The later Cassini-Huygens mission studied this structure in much greater detail.