Answer : 3. "नई दिल्ली"
Explanation :

Punjab National Bank (abbreviated as PNB) is an Indian public sector bank based in New Delhi. The bank was founded in May 1894 and is the second largest public sector bank in India in terms of its business volumes and second largest in terms of its network. The bank has over 180 million customers, 12,248 branches, and 13,000+ ATMs