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
Delta sign on CT head is seen in: 
Select and explain. 
A. Infarct, B. Superior saggital sinus thrombosis, C. SAH, D. EDH
B: Superior saggital sinus thrombosis
Answer: B: Superior saggital sinus thrombosis 
Explanation: Ans. Superior saggital sinus thrombosis