In the context of the physical geography of North Bihar, the term 'Maun' refers to which of the following features?

Options:

• A: Seasonal sandbars formed in the middle of the Ganga river channel.
• B: Deep structural faults separating the Siwaliks from the Ganga plains.
• C: Dry deciduous forest patches found in the Kaimur hills.
• D: Ox-bow lakes formed due to the meandering and abandonment of channels by Himalayan rivers.

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