Surgery Which of the following is NOT a cause of congenital hypercoagulability aEUR’ A Protein C deficiency B Protein S deficiency C Antiphospholipid antibody syndrome D MTHFR gene mutations 💡 Explanation Which of the following is NOT a cause of congenital hypercoagulability aEUR' ✓ Correct Answer: C. Antiphospholipid antibody syndrome