How did the geopolitical disruptions caused by Alexander's campaign in the Punjab and Sindh regions indirectly influence the internal political dynamics of the Nanda Empire in Magadha?

Options:

• A: The threat of Greek invasion and the displacement of northwestern scholars like Chanakya to Pataliputra fueled internal discontent against the Nanda ruler, facilitating the Maurya coup.
• B: The Nanda kings were forced to sign a mutual defense treaty with Alexander, which drained the Magadhan treasury.
• C: It led to a massive migration of Greek mercenaries to Pataliputra, who overthrew the Nanda dynasty and established a Greek-style oligarchy.
• D: The Nanda rulers voluntarily abdicated their throne in fear of a joint Greek-Persian invasion, leading to a period of anarchy.

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