The correct option is C Because Wazir Khan had tortured and killed the two minor sons of Guru Gobind Singh.
Wazir Khan was responsible for killing two Sahibzadas of Guru Gobind Singh. His sons were killed in the Anandpur battle. After that, Banda Singh and Wazir Khan confronted each other at Chappar-Chiri and faught the battle as he was determined to destroy the Mughals.