The correct option is B Nizams
The Nizam chose not to join the Indian Union after India gained independence in August 1947. However, his rule ended in September 1948, when the Indian Army launched Operation Polo, led by Sardar Vallabhbhai Patel, then Minister of Home Affairs and Deputy Prime Minister of India. The State of Hyderabad was invaded and the Nizam was forced to step down. The Asaf Jahis were allowed to keep their titles even after their reign ended. Asaf Jah VII chose his grandson Nawab Mir Barakat Ali Khan Bahadur Mukarram Jah as his successor, but he was Nizam only in name.