Choose the statement that applies to Andy, a 14-year-old child, who earned $2,200 mowing lawns during the summer. Andy also had interest income of $400. 1) Andy's parents must include the $400 of interest income on their tax return. 2) The $400 of unearned income is taxed at his parents' tax rate. 3) Andy must file his own return. 4) Form 8615 is used to compute Andy's income tax. 5) All of the above