The correct options are
A Ahilyabai was the daughter of Malhar Rao.
B The reign of Ahilyabai Holkar lasted for 30 years.
D Ahilyabai Holkar expanded her empire by waging wars.
In 1766, Ahilyabai Holkar, the daughter-in-law of Malhar Rao was crowned as the queen of the Malwa kingdom after his death. She was the queen for 28 years. She was also a great pioneer and built hundreds of temples and Dharmashalas throughout India. She did not wage wars and believed in championing peace.