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: Pediatrics
A girl presents with hyper pigmented skin lesions, precocious puberty and some bony lesion. what is the most probable diagnosis? 
Select and explain. 
A. Cushing syndrome, B. Neurofibromatosis, C. Mc - cune Albright syndrome, D. Hypothalamic hamartoma
C: Mc - cune Albright syndrome
Answer: C: Mc - cune Albright syndrome 
Explanation: The image represents cafe - au - lait spots. Precocious puberty, bony lesion like fibrous dysplasia are seen in Mc cune Albright syndrome,