The correct answer is: Both (A) and (B).
Jitwarpur and Dalmianagar are two major paper factories located in Bihar. Jitwarpur is a town in the Darbhanga district of Bihar, India. It is located on the banks of the Ganges River, about 100 kilometers from Patna. The town is known for its paper mills, which are among the largest in India. Dalmianagar is a town in the Rohtas district of Bihar, India. It is located on the banks of the Son River, about 150 kilometers from Patna. The town is known for its paper mills, which are among the largest in India.
The other options are incorrect. Banjari is a town in the Banka district of Bihar, India. It is located on the banks of the Ganges River, about 200 kilometers from Patna. The town is known for its rice mills, which are among the largest in India.