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
In infection involving the submandibular space when extra oral incision drainages are necessary, which of the following structures should be divided 
Select and explain. 
A. Skin only, B. Skin superficial fascia only, C. Skin, superficial fascia, platysma and masseter muscle, D. Skin, superficial fascia, platysma, masseter muscle and deep cervical fascia
D: Skin, superficial fascia, platysma, masseter muscle and deep cervical fascia
Answer: D: Skin, superficial fascia, platysma, masseter muscle and deep cervical fascia 
Explanation: None