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: Medicine
A 43-year-old man comes to the physician with pain in his left leg. He has a background of a left below-the-knee amputation 10 years ago. He reports that since the amputation he has always been “aware” of his left foot and had the feeling that it was still there. With time, it felt that his foot was moving proximally, and additionally, he developed pain and “burning” at the stump of his left leg. The pain does not change with position of his leg, topical treatments or medications. 
He is most likely suffering from which of the following syndromes? 
Select and explain. 
A. Complex regional pain syndrome, B. Dejerine-Roussy syndrome, C. Phantom limb pain, D. Peripheral neuropathy
C: Phantom limb pain
Answer: C: Phantom limb pain 
Explanation: None