The correct option is A Hashmat Khan wanted revenge against Mahan Singh for his army's defeat.
Hashmat Khan was the chief of the Chatha Clan. He and his army were defeated by King Mahan Singh. He wished to exact revenge as a result. And so, he hid behind a bush and attacked Ranjit Singh, who was returning after a hunting trip. Ranjit Singh defended himself and beheaded Hashmat Khan. The Chatha Clan was then compelled to surrender to the Sukerchakia Misl.