After the doctor questions their authenticity, the duke suggests that he and the king leave immediately with the money they have already stolen. Why does the king refuse to leave? (huckleberry finn)

1) He is waiting for Huck so he can give him his share.
2) They can not carry all the gold by themselves.
3) It is so dark that they will lose their way.
4) He won't leave until he steals all the girls' property.