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
In urea cycle, hydrolysis of arginine forms ? 
Select and explain. 
A. Citrulline, B. Ornithine, C. Carbomoyl phosphate, D. Arginosuccinase
B: Ornithine
Answer: B: Ornithine 
Explanation: Ans. is 'b' i.e., Ornithine