This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
In pyogenic liver abscess commonest route of spread is 
Select and explain. 
A. Hematogenous through poal vein, B. Ascending infection through biliary tract, C. Hepatic aery, D. Local spread
B: Ascending infection through biliary tract
Answer: B: Ascending infection through biliary tract 
Explanation: Routes of spread 1st most common - Biliary tract 2nd most common - poal vein