In Cases of Guillain-Barré Syndrome,what Does the Pathophysiology Include

In cases of Guillain-Barré syndrome,what does the pathophysiology include?

A) damage and loss of function in the motor neurons of the spinal cord and medulla
B) encephalopathy with disorientation,headache,and coma
C) infection and inflammation of the motor cortex
D) inflammation and demyelination of peripheral nerves,leading to ascending paralysis