This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fuel in Fed, Fasting and Starvation, Subject name: Biochemistry
[{'content': 'During fasting, which of the following is released from the muscles? \nSelect and explain. \nA. Alanine, B. Glutamine, C. Branched keto acid, D. Asparagine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: *Alanine is formed from glucose in muscles during fasting conditions. *This alanine comes out in blood, then taken up by liver *In liver it is conveed back to glucose by a pathway known as gluconeogenesis. *Then this glucose is again supplied to the fasting muscle. So, a cycle is formed known as Cahill cycle (see treasure).', 'role': 'assistant'}]