Given That Axons Grow Out Through the Action of Microtubules,what

Multiple Choice

Given that axons grow out through the action of microtubules,what should happen to axons growing out from a neuron when they are exposed to colchicine or nocodazole?

A) Axons grow more rapidly.
B) Axonal outgrowth stops.
C) Axons grow more rapidly
D) Axonal outgrowth stops
E) There is no change in axonal outgrowth.