This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Quaer staggered arrangement is seen in \nSelect and explain. \nA. Immunoglobulin, B. Hemoglobin, C. Keratin, D. Collagen', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The collagen fibres have a triple stranded,quaer staggered arrangement. This arrangement helps in mineralization Tropocollagen molecules are arranged in a "quater-staggered array" to form collagen fibres . Reference: Harpers illustrated biochemistry 31st edition pg 593', 'role': 'assistant'}]