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: Medicine
All are components of Laurence Moon Biedl syndrome, EXCEPT - 
Select and explain. 
A. Digital anomaly, B. Asthenic built, C. Mental retardation, D. Hypogonadism
B: Asthenic built
Answer: B: Asthenic built 
Explanation: In Lawrence Moon - Beidle syndrome the patient is obese, not asthenic
Other features are -

Mental retardation
Retinitis pigmentosa
Polydactyly
Hypogonadotropic hypogonadism (This causes Amenorrhoea)