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
All of the following effects are produced by inhibitors of prostaglandin synthesis EXCEPT : 
Select and explain. 
A. Prolongation of bleeding time, B. Prolongation of prothrombin time, C. Prolongation of labour, D. Gastric mucosal damage
B: Prolongation of prothrombin time
Answer: B: Prolongation of prothrombin time 
Explanation: None