How Does Gibberellin Actually Work

How does gibberellin actually work?

A) In the presence of blue light,it triggers additional photosynthesis and growth.
B) It attaches to a plasma membrane receptor and results in gene activation to produce the enzyme amylase that releases sugars for additional cell growth,division,and elongation.
C) In the presence of light,it increases the formation of additional DNA that codes for additional plant structures.
D) In the presence of unidirectional light,it moves to the shady side and activates an ATP-driven proton pump that results in weakened cell walls and eventual elongation.
E) In the presence of light,it increases the turgor pressure of the cell and accelerates growth.