This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Citelli's angle is 
Select and explain. 
A. Solid angle, B. CP angle, C. Sinodural angle, D. Pa of Mac Ewan's triangle
C: Sinodural angle
Answer: C: Sinodural angle 
Explanation: Sinudural angle, also called Citelli's angle, is situated between the sigmoid sinus and middle cranial fossa dural plate. Solid angle is the area where three bony semicircular canal meet.