Which of the following antimicrobials can be antagonized by pus? () A: Aminoglycosides B: Polymixins C: Beta-lactams D: Sulfonamide E: All<br/>of the above

Analog of sulfonamide is (    ). A: folic acid (FA) B: dihydrofolic acid (DHFA) C: tetrahydrofolic acid (THFA)  D: paraaminobenzoic acid (PABA)  E: glutamate