19. Consider the following ER diagram: ghi jkl def mno Betas Gamma abcAlpha of relational schemas and hod accurately portrays the re would result from applying the specified translation method to the diagram above? a) Alpha(abc,def) - Betas(abc.jkl,ghi) - Gammakl,mno)- using stable translation b) Alphaltedef-Betasabermno)-Gammadnojkl)-using null-sensitive transl c) Alpha(abc.def) _ Gamma(mno.ikl.ghi,abc)-using mapped translation d) None of these combinations is correct