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
True regarding collagen synthesis is all except ? 
Select and explain. 
A. Synthesized in ribosomes as preprocollagen, B. Hydroxylation of proline occurs in Golgi apparatus, C. Hydroxylation of lysine occurs in ER, D. Triple helix assembly occurs in ER
B: Hydroxylation of proline occurs in Golgi apparatus
Answer: B: Hydroxylation of proline occurs in Golgi apparatus 
Explanation: Ans. is 'b' i.e., Hydroxylation of proline occurs in Golgi apparatus