Step 1: Recall Magadhan dynasties.
The earliest Magadhan dynasty was Haryanka (Bimbisara, Ajatashatru).
It was followed by Sishunaga dynasty.
Afterwards came the powerful Nanda dynasty.
Finally, Chandragupta Maurya established the Maurya dynasty.
Step 2: Arrange in order.
First → Haryanka (D).
Second → Sishunaga (A).
Third → Nanda (B).
Fourth → Maurya (C).
Step 3: Verify with options.
This matches option (B) D, A, B, C.
Step 4: Conclusion.
Correct answer is (B) D, A, B, C.