<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 7-year-old boy is brought to the physician by his parents because of a 4.5-kg 10-lb weight loss during the last 3 months. During this period, he has complained of abdominal pain and fullness, and his parents feel that he has been eating less. His parents also report that his urine has appeared pink for several weeks. He has been performing poorly in school lately, with reports from teachers that he has not been paying attention in class and has been distracting to other students. He was born at term and has been healthy except for a history of several infantile seizures. His vital signs are within normal limits. He is at the 60th percentile for height and 20th percentile for weight. Physical examination shows a palpable abdominal mass, abdominal tenderness in the left upper quadrant, and left costovertebral angle tenderness. There are several ellipsoid, hypopigmented macules on the back and legs and a 4-cm raised plaque of rough, dimpled skin on the right lower back that is the same color as the surrounding skin. Which of the following is the most likely diagnosis?? A: Von HippelLindau disease, B: Neurofibromatosis type 1, C: Sturge-Weber syndrome, D: Tuberous sclerosis, E: Neurofibromatosis type 2,  <response>: This is a clinical vignette describing a 7-year-old boy with a history of weight loss, abdominal pain, decreased appetite, pink urine, poor school performance, abdominal mass, abdominal tenderness, costovertebral angle tenderness, hypopigmented macules, and a plaque on the back. The key findings pointing to the diagnosis are:- Weight loss, abdominal pain, decreased appetite - suggest some abdominal pathology- Pink urine - suggests blood in the urine- Abdominal mass, abdominal tenderness, costovertebral angle tenderness - suggest a mass in the left upper quadrant possibly involving the kidney - Hypopigmented macules and plaque on back - suggest skin findings typical of some neurocutaneous syndromesBased on the constellation of symptoms, the most likely diagnosis is a disease involving kidney tumors along with skin findings, which is most consistent with tuberous sclerosis.The other choices describe neurocutaneous syndromes that may have skin findings but would not explain the abdominal mass and symptoms.D: Tuberous sclerosis 