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
All of the following are true statements about Cockayne syndrome, EXCEPT 
Select and explain. 
A. Defective transcription-coupled repair, B. Photosensitivity, C. Increased risk of cancer, D. Mental retardation
C: Increased risk of cancer
Answer: C: Increased risk of cancer 
Explanation: 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.