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: Anatomy
True about cremasteric reflex? 
Select and explain. 
A. Afferent: genital branch of genitofemoral nerve, B. Efferent: genital branch of genitofermoral nerve, C. Efferent: femoral branch of genitofemoral nerve, D. Afferent: pudendal nerve
B: Efferent: genital branch of genitofermoral nerve
Answer: B: Efferent: genital branch of genitofermoral nerve 
Explanation: Ans. is 'b' i.e., Efferent : genital branch of genitofemoral nerve