The correct options are
A Rigidity of the existing caste system
B Aurangzeb's atrocities on Hindus
C Unreliability of the kings of the hill states
Guruji condemned the rigid caste system and discrimination prevalent in the community. He wished to establish a society that rejected notions such as caste. The Mughal Emperor, Aurangzeb was a bigoted Muslim. He discriminated against Hindus, and the Guruji didn't support this hostility. The kings of the hill states were the closest neighbours to Anandpur Sahib, which was home to the Sikhs. However, these kings were not reliable allies as the Guruji has had to fend off attacks from their forces on multiple occasions.