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: Pharmacology
Which of the following tumour shows a radiological sign called "pneumonias dilatans"? NOT RELATED-RADIOLOGY 
Select and explain. 
A. Meningiomas, B. Ependymomas, C. Hemangioblastomas, D. Medulloblastomas
A: Meningiomas
Answer: A: Meningiomas 
Explanation: Radiological signs of meningiomas:- Dural-based tumor - Hyperostosis of skull- Pneumosinus dilatans - Dural tail sign- Strong homogenous contrast uptake - Calcification common - Mother-in-law sign