This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: CNS Tumors, Subject name: Surgery
All of the following are true about this brain tumor except: 
Select and explain. 
A. Most common intracranial, extra-axial dural-based neoplasm, B. Associated with spasticity & lower limb weakness, sensory deficit and sphincter dysfunction of bladder, C. Calcification is seen in 60-65% cases, D. Simpson grading system is used for resection
C: Calcification is seen in 60-65% cases
Answer: C: Calcification is seen in 60-65% cases 
Explanation: Meningioma (showing dural tail) Mostly occur along the superior sagittal sinus Most common intracranial, extra-axial dural-based neoplasm Associated with spasticity & lower limb weakness, sensory deficit and sphincter dysfunction of bladder Calcification is seen in 20-25% cases Simpson grading system is used for meningioma resection