Joan was injured in an auto accident. She was totally disabled and collected disability income benefits for 8 months. She would like to return to work on a part-time basis to see if her recovery is complete. Under what type of an insurance contract will her insurer pay disability income benefits to her during the period of her part-time employment?

A) Recurrent disability.

B) Presumptive disability.

C) Permanent disability.

D) Partial disability.

Explain your answer.