In Multiple Sclerosis, the myelin sheath slowly degrades.. Consequences?

1. In Multiple Sclerosis, the myelin sheath slowly degrades. What are possible consequences of this?
a. Axons are slower to fire initial action potentials so response time are slower.
b. Ions are able to diffuse out of the axon membrane more easily, so signals cannot travel entire distance.
c. Electrochemical gradients along these unmyelated regions increase.
d. Increased number of areas where action potentials occur down the membrane.


so i understand that if the mylen sheath are gone, there will be more action potentials down the membrane, but it will also take a longer time for the neurotransmitter to be released because there are so many action potentials down the axon. SO IS IT A OR D???