Which of the following yield both alkane and alkene

Kolbe's method : Electrolysis of a concentrated aqueous solution of either sodium or potassium salts of

carboxylic acids yields Alkanes/Alkenes at anode ${\mathrm{CH}}_3\mathrm{COONa}\to {\mathrm{CH}}_3{\mathrm{COO}}^{-}+{\mathrm{Na}}^{+}$

Anode : $2{\mathrm{CH}}_3{\mathrm{COO}}^{-}\stackrel{2e^{-}}{\to }{\mathrm{CH}}_3-{\mathrm{CH}}_3+2{\mathrm{CO}}_3$

Cathode : $2{\mathrm{Na}}^{+}+2e^{-}\to 2\mathrm{Na}$,

 $2\mathrm{Na}+2{\mathrm{H}}_2\mathrm{O}\to 2\mathrm{NaOH}+{\mathrm{H}}_2$