public class Car { public void m1() { System.out.println("car 1"); } public void m2() { System.out.println("car 2"); } public String toString() { return "vroom"; } } public class Truck extends Car { public void m1() { System.out.println("truck 1"); } public void m2() { super.m1(); } public String toString() { return super.toString() + super.toString(); } } And assuming that the following variable has been declared: Truck mytruck = new Truck(); What is the output from the following statements? System.out.println(mytruck); mytruck.m1(); mytruck.m2(); Submit