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: Surgery
Which of the following will manifest as "pachymeningitis heamorrhagica interna" ? 
Select and explain. 
A. Epidural haematoma, B. Subdural haematoma, C. Subarachonoid haemorrhage, D. Brain infraction
B: Subdural haematoma
Answer: B: Subdural haematoma 
Explanation: Ans. is 'b' i.e., Subdural haematoma