What Organ excrete/breakdown toxins from the body? ?

Question

I was asked this question in an exam and I chose liver. I tried to google the answer and I realize that the kidney performs the same function. I never got to see the result of the exam. I was wondering in this case what will the right answers be if you have both kidney and liver in the options. 

Answer 1

Your liver doesn't excrete anything. Only your kidneys sure responsible for that

Answer 2

The liver breaks down toxins and to some extent excretes them via the gall bladder, but the kidney is the main excretory organ along with the lungs and the skin.