Which among the following is a prodrug?

Ref: Tripathi 6^th ed/23-24
Prulifloxacin is prodrug of Ulifloxacin.
 
Prodrug                                                           Active form
Levodopa                                                         Dopamine
Enalapril                                                          Enalaprilat
α-Methyldopa                                                  α- methylnorepinephrine
Dipivefrine                                                       Epinephrine
Sulindac                                                           Sulfide metabolite
Proguanil                                                         Cycloguanil
Prednisone                                                       Prednisolone
Bacampicillin                                                   Ampicillin
Sulfasalazine                                                   5- Aminosalicylic acid
Cyclophosphamide                                          Aldophosphamide,
phosphoramide mustard,  acrolein
Fluorouracil                                                     Fluorouridine monophosphate
Mercaptopurine                                                Methylmercaptopurine ribonucleotide
Acyclovir                                                        Acyclovir triphosphate