One harmone is used to speed up the malting process in barely, another is used to promote flowering in pineapple, while the third helps in the delay of leaf senescence. These are respectively
A. Auxin, gibberllin and cytokinin
B. Gibberllin, cytokinin and auxin
C. Gibbereliin, auxin and cytokinin
D. Cytokinins, auxin and gibberelin