30. Unless otherwise indicated, a child is presumed to be wholly or substantially maintained by the income of the accident victim if the child has no spouse, is unemployed and:(1) is a minor;
(2) is between 18 and 25 years of age and has been attending a university, college or secondary or post-secondary establishment on a full-time basis ever since his or her eighteenth birthday; or
(3) is over 18 years of age and has been an invalid ever since his or her eighteenth birthday.