Which blood vessel contains the least amount of urea ?

The given diagram represents a nephron and its blood supply. Study the diagram and answer the question : Name the blood vessel which contains the least amount of urea in this diagram.

Which blood vessel has the largest amount of urea ?

Which blood vessel has the largest amount of urea ?

Which blood vessel has the largest amount of urea ?

Which blood vessel has the largest amount of urea ?

Which blood vessel carries least amount of urea?

Which blood vessel carries least amount of urea?

Which blood vessel carries least amount of urea?

Which one of the following blood vessel in mammals contains least amount of urea :