This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lower Extremity, Subject name: Anatomy
Weakness of extensor Hallucis longus is due to which nerve root mainly? 
Select and explain. 
A. L5, B. L4, C. S1, D. S2
A: L5
Answer: A: L5 
Explanation: Ans. is 'a' i.e., L5 Important muscles and their chief myotomesMuscleMyotomeExtensor Hallucis LongusL5Tibialis anteriorL4Flexor Hallucis LongusS1GastrosoleusS1Gluteus Medius and MinimusL5Gluteus MaximusS1Quadriceps FemorisL3