Which Sentence Best Describes the Fibres Travelling to the Somatosensory

Which sentence best describes the fibres travelling to the somatosensory cortex, via the lemniscal tract, responsible for the propagation of signals mediating haptic object recognition?

A) Their axons are wrapped in a protective coating (the myelin sheath) , which slows down the conduction but ensures that signal is fully processed.
B) Their axons are wrapped in a protective coating (the myelin sheath) , which gives them a fast conduction velocity.
C) Their axons are not myelinated, which guaranties a fast conduction velocity.
D) Their axons are not myelinated and the signal propagation is relatively slow.