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: Radiology
In idiopathic basal ganglia calcification, structure most often calcified 
Select and explain. 
A. Caudate nucleus, B. Putamen, C. Globus pallidus, D. Striatum
C: Globus pallidus
Answer: C: Globus pallidus 
Explanation: Structure most often calcified - Globus pallidus.