This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Lesions within the basal ganglia produce the following signs except: 
Select and explain. 
A. Hypotonia, B. Tremor, C. Hemiballismus, D. Athetosis
A: Hypotonia
Answer: A: Hypotonia 
Explanation: None