Analyze the following statements and select the correct option: **Assertion (A):** The period between 1745 and 1748 saw a dangerous convergence of Maratha incursions and Afghan rebellions in Bihar, nearly destabilizing Alivardi Khan's rule. **Reason (R):** The Afghan rebels under Shamsher Khan and Sardar Khan assassinated the Naib Nazim of Bihar, Zainuddin Haibat Jang, in 1748 and collaborated with the Marathas to plunder Patna and surrounding regions.

Options:

• A: Both A and R are true and R is the correct explanation of A.
• B: Both A and R are true but R is not the correct explanation of A.
• C: A is true but R is false.
• D: A is false but R is true.

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