This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Molecular Biology, Subject name: Biochemistry
[{'content': 'All of the following are true statements about Cockayne syndrome, EXCEPT \nSelect and explain. \nA. Defective transcription-coupled repair, B. Photosensitivity, C. Increased risk of cancer, D. Mental retardation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Cockayne syndrome: Defect in transcription coupled nucleotide excision repair. C/F : failure to thrive, microcephaly, hearing loss, nervous system anomalies, photosensitivity. Patients are not predisposed to cancer.', 'role': 'assistant'}]