The correct options are
A The low wages and poor working conditions of the sepoys.
B The direct violation of religious sentiments by the new regulations.
C The experiments in land tenures and famine seen during this period.
The Vellore Revolt of 1806 had numerous reasons. Firstly, the sepoys were paid less and faced poor promotions. Most of them belonged to the agricultural class and were hit by the famine. The experimental land tenures also added to their burdens financially. The last straw came with the addition of the leather cockade. This hurt the religious sentiments of the sepoys.