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: Pathology
Which of the following is a difference between herpangina and primary herpetic stomatitis: 
Select and explain. 
A. It is preceded by prodromal symptoms, B. It is unilateral in nature, C. Ulcers relationship seen on the anterior faucial pillars, D. Viral etiology
C: Ulcers relationship seen on the anterior faucial pillars
Answer: C: Ulcers relationship seen on the anterior faucial pillars 
Explanation: None