What was/ were the cause(s) of war of succession between the son of Shah Jahan?

Q. What was/ were the cause(s) of war of succession between the son of Shah Jahan?

(a) Removal of Mir Mumla, a confident of Aurangzeb, from the office of wazir

(b) Unfounded rumour of Shah Jaha’s death and succession of Dara Shikoh to the throne.

(c) Shah Jahan’s special affection for Dara Shikoh, leading to rivalry between Dara Shikoh and Aurangzeb.

(d) Both (b) and (c)

Ans: (d) Both (b) and (c)