The southern part of Bihar (such as Gaya, Nawada, and Munger) represents which geological unit in relation to the tectonic evolution of the Indian subcontinent?

Options:

• A: The southern extension of the Himalayan foredeep basin.
• B: A newly formed volcanic rift zone.
• C: An accreted terrane from the Eurasian plate.
• D: The northernmost extension of the stable Peninsular Shield (Chhotanagpur Gneissic Complex).

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