Consider the following statements regarding Humayun's early military campaigns: 1. His first campaign after accession was against the fortress of Kalinjar in 1531. 2. He besieged the fort of Chunar in 1532, which was held by Sher Khan. 3. Humayun completely annexed Bihar immediately after the first siege of Chunar. Which of the statements given above are correct?

Options:

• A: 2 and 3 only
• B: 1 and 2 only
• C: 1 and 3 only
• D: 1, 2 and 3

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