Sulfanomides exert a bacteriostatic effect by competitivel;y inhibiting the action of.. Para-aminobenzoic acid

Sulfanomides exert a bacteriostatic effect by competitivel;y inhibiting the action of
A) monoamine oxidase
B) Xanthine oxidase
C) Pyrimidine
D) Para-aminobenzoic acid***
E) Uric acid.