Why Are Rebel Groups Reluctant to Lay Down Their Arms

Why are rebel groups reluctant to lay down their arms for peace?

A) They do not know if they will be getting a good deal.
B) They are not sure how powerful the state really is.
C) They have other occupations,such as hunting and policing,that require their weapons.
D) They would rather be able to sell their weapons to another rebel group in a neighboring state.
E) They cannot be sure that the government will keep to a deal once they are disarmed.