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: Gynaecology & Obstetrics
McCune Albright syndrome is characterised by all except 
Select and explain. 
A. Cafe au lait skin spots, B. Polyostotic fibrous dysplasia, C. Delayed puberty, D. Mutated α - subunit of G-protein
C: Delayed puberty
Answer: C: Delayed puberty 
Explanation: McCune Albright syndrome → causes precocious puberty.
Mc-cune Albright syndrome :

GS alpha mutation
Precocious puberty
Cafe u lait spots
Short 4th metacarpal
Kukcle knuckle dimple knuckle sign