A 70-year-old male patient presents with pain running along the back of his left lower extremity to the ankle. The left ankle jerk is diminished. Straight leg raise reproduces the pain on the left...

A 70-year-old male patient presents with pain running along the back of his left lower extremity to the ankle. The left ankle jerk is diminished. Straight leg raise reproduces the pain on the left leg. He has weakness of plantar flexion. He notes that the pain started after lifting heavy boxes around the house. What is the most likely cause?

A. Left sciatica

B. Left S1 radiculopathy

C. Left common peroneal nerve palsy

D. Left tarsal tunnel syndrome

E. Left femoral nerve palsy