Mimas, the Inner Large Moon of Saturn, Orbits the Planet

Mimas, the inner large moon of Saturn, orbits the planet at what distance compared to the rings of Saturn? (See Figure 12-24.)
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A) outside the main ring system
B) just on the inner edge of the main ring system
C) in the Cassini division, between the A and B rings
D) just above the planet's surface, well inside the ring system