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
Langerhans cell histiocytosis true is all except - 
Select and explain. 
A. Peak incidence less than 3 years of age, B. Radiosensitive, C. Diffuse form is known as litterer-siwe-disease, D. Gonadal involvement occurs
D: Gonadal involvement occurs
Answer: D: Gonadal involvement occurs 
Explanation: None