Haroon was recently seriously injured in the crash of a single engine plane. As a result of the accident both of his legs were amputated just below the knee. After six-months of recuperation, he was able to return full-time to his previous job as an accountant. Despite now working full-time, Haroon is still receiving full benefits from his personally owned disability policy, and will continue receiving these monthly benefits for the balance of the duration of the five-year benefit period. Under what definition of disability is Haroon receiving these benefits? 

A) Presumptive disability 

B) Residual disability 

C) Own occupation 

D) Partial disability