What was the most important reason for the First Anglo- Sikh War (1845-46)?

Q. What was the most important reason for the First Anglo- Sikh War (1845-46)?

(a) The attempts of the English Company to interfere with the internal matters of the Lahore state

(b) The agreement entered into the Dogra Chief, Gulab Singh, by the English to sell Kashmir to the former

(c) To divert the energies of ungovernable Khalsa army

(d) The war-like preparations of the English across the Sutlej

Ans: (c) To divert the energies of ungovernable Khalsa army