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: Biochemistry
Which of the following pathway occurs paly in mitochondria and paly in cytosol ? 
Select and explain. 
A. Glycolysis, B. Kreb's cycle, C. Ketogenesis, D. Urea cycle
D: Urea cycle
Answer: D: Urea cycle 
Explanation: Ans. is 'd' i.e., Urea cycle