Vanillylmandelic acid is an organic acid composed of carbon (54.55%), hydrogen (5.09%), and oxygen (40.37%). Its molar mass is 198.17 g/mol. Determine the empirical and molecular formulas of the acid.
a) Empirical: C₆H₇O₃, Molecular: C₁₂H₁₄O₆
b) Empirical: C₆H₇O₃, Molecular: C₅H₈O₃
c) Empirical: C₃H₄O₃, Molecular: C₆H₈O₆
d) Empirical: C₃H₃O₃, Molecular: C₆H₈O₆