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
Oral anticoagulants are monitored by: 
Select and explain. 
A. Bleeding time (BT), B. Coagulation time (CT), C. Prothrombin time (PT), D. Partial thromboplastin time (PTT)
C: Prothrombin time (PT)
Answer: C: Prothrombin time (PT) 
Explanation: None