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: Unknown
A 2-year old male child has been limping ever since he has started walking. Examination reveals a short right lower limb with limited abduction at the hip. the Trendelenburg sign is positive however telescopy is absent. The most probable diagnosis is- 
Select and explain. 
A. Kimer's deformity, B. Congential dislocation of the hip, C. Congenital coxa vara, D. Perther's disease
C: Congenital coxa vara
Answer: C: Congenital coxa vara 
Explanation: Ans-C