Correct option is (C) Potassium acetate
Potassium acetate on electrolysis gives ethane.
\(\underset{\text{Potassium acetate}}{2CH_3 COOK + 2H_2O} \xrightarrow{\text{Eletrolysis}} CH_3 - CH_3 + \underset{\text{Anode}}{2CO_2} + 2KOH + \underset{\text{Cathode}}{H_2}\)
