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
[{'content': 'Difference between High mannose & complex glycoprotein \nSelect and explain. \nA. Core pentasacharide, B. Protein chain, C. Asparagine, D. Presence of G1C - NAc - Gal - NANA in complex glycoprotein', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Presence of G1C - NAc - Gal - NANA in complex glycoprotein', 'role': 'assistant'}]