Pruning or Lowering the Level of a Hedge with a Hedge

Multiple Choice

Pruning or lowering the level of a hedge with a hedge trimmer stimulates the hedge to become more bushy because:

A) this stimulates the production of ethylene gas.
B) removing the apical meristems makes more auxin, which stimulates lateral branch buds to grow
C) removing the lateral buds results in apical dominance under the influence of cytokinins.
D) removing the apical meristems makes less ethylene, thereby stimulating lateral branches to grow
E) removing the apical meristems results in less auxin, thereby allowing lateral branches to grow