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 is not true about silver sulfadiazine 
Select and explain. 
A. Used in burns dressings, B. Antibacterial action against Pseudomonas, C. Has immunomodulatory action, D. Side effect is hypersensitivity reaction
C: Has immunomodulatory action
Answer: C: Has immunomodulatory action 
Explanation: Silver sulfadiazine is the most common dressing used for burns.