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. Andy's parents must include the $400 of interest income on their tax return. The $400 of unearned income is taxed at his parents' tax rate. Andy must file his own return. Form 8615 is used to compute Andy's income tax. All of the above.