Consider the following code snippet:Vehicle aVehicle = new Auto(4,"gasoline");String s = aVehicle. toString();Assume that the Auto class inherits from the Vehicle class, and neither class has an implementation of the toString() method. Which of the following statements is correct?a) The toString() method of the Object class will be used when this code is executed. b) The toString() method of the String class will be used when this code is executed. c) This code will not compile because there is no toString() method in the Vehicle class. d) This code will not compile because there is no toString() method in the Auto class.