The correct answer is: A. Gulab Singh.
Mehar Chand Mahajan was the first Prime Minister of Jammu and Kashmir during the reign of Maharaja Gulab Singh. He was appointed as the Prime Minister in 1846, after the Treaty of Amritsar was signed between the British East India Company and Maharaja Gulab Singh. Mahajan served as the Prime Minister of Jammu and Kashmir for over 20 years, until his death in 1867.
Mahajan was a highly respected figure in Jammu and Kashmir. He was known for his administrative skills and his ability to maintain peace and order in the state. He was also a strong advocate for the rights of the people of Jammu and Kashmir.
Mahajan’s appointment as the Prime Minister of Jammu and Kashmir was a significant event in the history of the state. It marked the beginning of a new era in the state’s history, an era in which the people of Jammu and Kashmir were able to enjoy a greater degree of autonomy and self-rule.
Mahajan’s legacy is a lasting one. He is remembered as one of the most important figures in the history of Jammu and Kashmir. His contributions to the state are still felt today.
The other options are incorrect.
Option B: Hari Singh was the Maharaja of Jammu and Kashmir from 1925 to 1953. He was not the first Prime Minister of Jammu and Kashmir.
Option C: Karna Singh was the Maharaja of Jammu and Kashmir from 1953 to 1972. He was not the first Prime Minister of Jammu and Kashmir.
Option D: None of these is the correct answer.