The correct option is A Hindusim
The Ahoms are a tribe in the North Eastern part of India. Originally, the Ahoms worshipped their own tribal gods. During the first half of the seventeenth century, however, the influence of Brahmanas increased. Temples and Brahmanas were granted land by the king. In the reign of Sib Singh (1714-1744), Hinduism became the predominant religion. But the Ahom kings did not completely give up their traditional beliefs even after adopting Hinduism.