Having Venous Blood from the Intestines Flow Through the Liver

Having venous blood from the intestines flow through the liver before entering the systemic circulation has the following advantages: .

A) the liver can store nutrient rich blood for emergency needs of the body
B) the anatomical position of the liver makes it simpler for intestinal blood to flow through it rather than around it to get to the inferior vena cave
C) the liver can process products of digestion before blood circulates to the whole body
D) the liver can release insulin based on the amount of sugars it finds in the intestinal blood