This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous System, Subject name: Radiology
Intracranial calcification in skull X- ray may be: 
Select and explain. 
A. Pineal calcification, B. Duralcalfication, C. Cysticercosis, D. All of these
D: All of these
Answer: D: All of these 
Explanation: d) all of these ref: Chapman 4th/e p.428-429