The correct option is B 1806
Vellore Mutiny, outbreak against the British on July 10, 1806, by sepoys (Indian troops employed by the British) at Vellore. The immediate causes of the mutiny revolved mainly around resentment felt towards changes in the sepoy dress code, introduced in November 1805. Hindus were prohibited from wearing religious marks on their foreheads while on duty, and Muslims were required to shave their beards and trim their moustaches.