In Parkinson's Disease

Multiple Choice

In Parkinson's disease,

A) Input from the substantia nigra to the basal ganglia is impaired
B) Ability to suppress unwanted movement is impaired
C) Ability to make voluntary movements is not impaired
D) Both input from the substantia nigra to the basal ganglia is impaired and ability to suppress unwanted movement is impaired are correct
E) All of the choices are correct