Which one of the following pairs, is not correctly matched?

Gibberellic acid stimulates the growth of stems and leaves, causing elongation of internodes and expansion of leaves; it also breaks dormancy, causes bolting and delays senescence.
Leaf fall (abscission) is not caused by gibberellic acid; it is promoted by abscisic acid (ABA) and ethylene. So the pair gibberellic acid - leaf fall is not correctly matched.
Cytokinins promote cell division (cytokinesis).
IAA (indole-3-acetic acid, an auxin) causes cell elongation by loosening the cell wall.
Abscisic acid stimulates the closure of stomata during water stress, and is therefore called the stress hormone.
So the pair that is not correctly matched is gibberellic acid - leaf fall.