Which of the following anticoagulants works by inhibiting the synthesis of vitamin K-dependent coagulation factors?

A Warfarin ✓
B Heparin
C Aspirin
D Clopidogrel

Explanation

Warfarin works by inhibiting the synthesis of vitamin K-dependent coagulation factors, including factors II, VII, IX, and X.

Source

Harrison's Principles of Internal Medicine
Hematology Hematology: Coagulation Disorders Hematology: Coagulation Disorders Easy MEDICAL Confidence: high