Which of the following option shows a pair of antagonist phytohormones with respect to the given feature?

Step-by-step solution

Both auxin and gibberellin can promote parthenocarpy. Both ethylene and abscisic acid promote abscission. Both gibberellin and cytokinin delay senescence. However, gibberellin promotes seed germination while Abscisic acid inhibits seed germination. Thus, they are antagonistic.