Pruning of plants promote branching due to sensation of axillary buds by

Study the following statements

I. "X" hormone promotes root growth and root hair formation thus helping the plants to increase their absorption surface.
II. "Y" hormone induces flowering in mango and also promotes rapid internode/petiole elongation in deep plants and hence helping leaves or upper parts of shoot above water.
III. "Z" hormone inhibits the seed germination, increases the tolerance of a plant to various stresses, plays an important role in seed development, maturation and dormancy.

Identify the correct names of hormones marked as 'X', 'Y', and 'Z'.