Which event in the adventures of huckleberry finm shows an example of an act of cowardice? select all that apply.

·colonel sherburn shoots and kills a drunk man who is unarmed and defenceless.
·the duke takes over the printing office and distributes leaflets announcing jim's escape.
·the duke and king are allowed to travel with huck and jim, even though the pair know they are frauds.
·huck secretly takes a sum of the money that the duck and king have stolen and returns it to its rightful owners.