question: Q:A 7-year-old girl presents to her primary care physician for a routine check-up. The physician allows the medical student to perform a physical examination. The medical student notes hearing impairment as well as the findings show in Figures A and B. Radiographs show indications of multiple old fractures of the humerus that have healed. After questioning the girl’s parents, the medical student learns that in addition, the patient is extremely picky with her food and eats a diet consisting mainly of cereal and pasta. What is the most likely etiology of the patient’s disease?? 
  {'A': 'Decreased bone mineral density', 'B': 'Defective mineralization of cartilage', 'C': 'Deficiency of type 1 collagen', 'D': 'Dietary deficiency of ascorbic acid', 'E': 'Non-accidental trauma'},