determine whether the individual is:

(a) disabled and exempt from participation in work activities assigned in accordance with the provisions of this Part; provided, however, that such determination shall specify the duration of time for which the disability shall prevent the social services official from making an assignment to work activities;

(b) work limited, having specific identified limitations affecting the type of work activity to which the individual may be assigned; provided, however, that such determination shall specify the duration of time for which such work limitations shall apply to such individual;

(c) neither disabled nor work limited.