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
The dangerous layer of the scalp is: 
Select and explain. 
A. Connective tissue., B. Loose areolar tissue., C. Aponeurosis., D. Pericranium.
B: Loose areolar tissue.
Answer: B: Loose areolar tissue. 
Explanation: None