Unknown

A 4-year-old child presented with symptoms of unsteady gait, tremors and frequent shivering in the body along with headaches and dizziness for past 6 months. There was history of frequent chest infections and few episodes of seizures in the past. The child was normal at bih. O/E: - Speech, hearing and visual impairment Discoloration of areas of skin exposed to sunlight. MRI brain was done along with MR spectroscopy which showed a choline peak. The gene responsible for the above condition is present on which of the following chromosome: -