Decarboxylation of all six possible forms of diaminobenzoic acids C6H3(NH2)2COOH yields three products A, B and C. Three acids give a product ‘A’, two acids gives a product ‘B’ and one acid give a product ‘C’. The melting point of product ‘C’ is
(A) 63ºC
(B) 90ºC
(C) 104ºC
(D) 142ºC
