Assume that class Bicycle has following two private data fields: private int gear; private int speed; and the following method, in addition to other methods: public String toString() { return gear + speed; } Now, we want to write a class called Mountain Bike that inherits the properties of class Bicycle as follows, having only one data field: public class Mountain Bike extends Bicycle { private int seatHeight; We want to include a method toString in class Mountain Bike to create a String representation of the object, including all attributes. It can be written as follows: A public String toString() { return super.toString() + seatHeight; } public String toString() { return Bicycle.toString() + seatHeight; } public String toString() { return this.toString() + seatHeight; } public String toString({ return gear + speed + seatHeight; }