This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Varicose Veins, Subject name: Surgery
Saphenous vein cannulation is- 
Select and explain. 
A. Ant to medial malleolus, B. At fossaovalis, C. Above popliteal fossa, D. None
A: Ant to medial malleolus
Answer: A: Ant to medial malleolus 
Explanation: Ans. is 'a' i.e., Ant. to medial malleolus o Saphenous venous cut down at ankle provide excellent access. It is reliably found 1 cm. anterior and 1 cm. superior to the medial malleolus.