A monobasic acid of weight 15.5 g is heated with excess of oxygen & evolved gases when passed through KOH solution increased its weight by 22 g and when passed through anhydrous CaCI2, increased its weight by 13.5 g. When the same mass of this organic acid is reacted with excess of silver nitrate solution form 41.75 g silver salt of the acid which on ignition gave the residue of weight 27 g. The molar masses of the acid & its silver salt respectively are :
(A) 60, 168
(B) 167, 60
(C) 60, 167
(D) 168, 60