<prompt> Which of the following agents is beneficial in NSAID induced gastric ulcer?PGE1 agonistPGE2 agonistPGD2 agonistPGF2alpha agonist  <response>: functioning as natural ulcer protective by enhancing gastric mucus and HCO3 production as well as by improving mucosal circulation ESSENTIALS OF MEDICAL PHARMACOLOGY SEVENTH EDITION KD TRIPATHI PG NO.186 