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
Knowledge of the segmental cutaneous innervation of the skin of the lower extremity is important in determining the level of intervertebral disc disease. Thus, S1 nerve root irritation will result in pain located along the - 
Select and explain. 
A. Anterior aspect of the thigh, B. Medial aspect of the thigh, C. Anteromedial aspect of the leg, D. Lateral side of the foot
D: Lateral side of the foot
Answer: D: Lateral side of the foot 
Explanation: S1 nerve root impairment results in

Weak plantar flexion
Weak eversion of the foot
Depressed ankle jerk
Sensory loss along lateral border of foot