Mark Injured His Back at Work Several Years Ago

Mark injured his back at work several years ago.Although he was treated and considered healed by his physicians,he still complains of severe and debilitating back pain.Other than some minor scar tissue,his doctors can't find anything that could be causing more than some minor stiffness.What is Mark's most likely diagnosis?

A) somatic symptom disorder with predominant pain due to a general medical condition
B) somatic symptom disorder due to primarily psychological factors
C) somatic symptom disorder with predominant pain due to psychological factors
D) somatic symptom disorder with predominant pain due to psychological factors and a general medical condition