A person satisfies the concession card requirement on a day if:
(a) the person is a holder of a concession card, or the person's name is included on a concession card, on that day; or
(b) both of the following apply:
(i) the person satisfies the medical needs requirement under subsection 917C(2) (caring for a person) on that day in relation to a person with medical needs;
(ii) the person with medical needs is a holder of a concession card, or the name of the person with medical needs is included on a concession card, on that day.