The correct answer is C. Mughal.
The Dev rulers were a Hindu dynasty that ruled over the Jammu region of India from the 13th to the 16th centuries. They were initially vassals of the Delhi Sultanate, but they later became independent. The Dev rulers were known for their military prowess and their patronage of the arts. They built many temples and forts in the Jammu region.
The Mughal Empire was an Islamic empire that ruled over much of the Indian subcontinent from the 16th to the 18th centuries. The Mughals were a powerful and wealthy empire, and they had a significant impact on the culture and history of India.
The Dev rulers served as Mansabdars of Jammu under the Mughal Empire. A Mansabdar was a military officer in the Mughal army. Mansabdars were ranked according to their military rank and the number of troops they commanded. The Dev rulers were high-ranking Mansabdars, and they played an important role in the Mughal military.
The Dev rulers were eventually overthrown by the Mughals in the 16th century. However, they left a lasting legacy on the Jammu region. Their temples and forts are still standing today, and they are a reminder of their once-powerful empire.