Correct option is C
(A), (C) and (E) are the correct statements.
(B) is incorrect: The army of Awadh did not support the British; it was one of the key regions that participated in the revolt.
(D) is incorrect: The 7th Awadh Irregular Cavalry did not accept the new cartridges; rather, the issue of greased cartridges was one of the triggers of the revolt.