The correct option is B A=Propane and B=Na2CO3
Soda Lime Process : Alkanes produced from carboxylic acid by decarboxylation containing one Carbon atom less than the carboxylic acid (reactant).
Decarboxylating Agent:NaOH(Caustic Soda), CaO(Quick lime)
CH3−CH2−CH2−COOH+NaOH△−−→CaOCH3−CH2−CH3+Na2CO3