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
Difference between High mannose & complex glycoprotein 
Select and explain. 
A. Core pentasacharide, B. Protein chain, C. Asparagine, D. Presence of G1C - NAc - Gal - NANA in complex glycoprotein
D: Presence of G1C - NAc - Gal - NANA in complex glycoprotein
Answer: D: Presence of G1C - NAc - Gal - NANA in complex glycoprotein 
Explanation: D i.e. Presence of G1C - NAc - Gal - NANA in complex glycoprotein