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: Pharmacology
Which of the following is a monoclonal antibody against PD-L1 ? 
Select and explain. 
A. Golimumab, B. Guselkumab, C. Durvalumab, D. Vedolizumab
C: Durvalumab
Answer: C: Durvalumab 
Explanation: Avelumab & Durvalumab  are monoclonal antibody against PD-L1