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: Pathology
[{'content': "Lysosomal transpo defect is seen in \nSelect and explain. \nA. Cystinosis, B. Goucher's disease, C. Metachromatic leukosytrophy, D. Tay Sach's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. CystinosisTwo disorders are caused by a proven defect in carrier-mediated transpo of metabolites: cystinosis end the group of sialic acid storage disorders (SASD).', 'role': 'assistant'}]