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: Surgery
Lymphangiography of the leg is performed by ? 
Select and explain. 
A. Injecting sodium diatrizoate retrogradely under pressure into a small vein on the dorsum of the foot, B. Dissecting lymphatics through an incision on the dorsum of the foot, C. The use of an infusion pump, D. All
B: Dissecting lymphatics through an incision on the dorsum of the foot
Answer: B: Dissecting lymphatics through an incision on the dorsum of the foot 
Explanation: Ans. is 'b' i.e., Dissecting lymphatics through an incision on the dorsum of the foot