Answer: B — Cytokinins and Abscisic acid
Cytokinins promote cell division and are found in high concentration in seeds and fruits. Abscisic acid inhibits growth and causes wilting of leaves.
The textbook (Chapter 6, Section 6.2.2) directly states: "Cytokinins promote cell division… present in greater concentration in areas of rapid cell division, such as in fruits and seeds" and "Abscisic acid… inhibits growth. Its effects include wilting of leaves." Auxins and gibberellins promote stem/cell elongation, not rapid cell division. Do not confuse cytokinins with auxins.