Which pair below represents isomers of the same compound?

A \( CH_3CH_2CH_2OH \) and \( HOCH_2CH_2CH_3 \)

B \( CH_3CH_2CH_3 \) and \( CH_3CH_2CH_3 \)

C \( CH_3CH(Cl)CH_3 \) and \( CH_3CH_2CH_2Cl \)