CSA Study guide Exam questions and answers Graded A+ Consider the following class definition public class Book { private double cost; public double getCost() { return cost; } // There may be instance variables, constructors, and methods not shown. }

CSA Study guide Exam questions and answers Graded A+ Consider the following class definition public class Book { private double cost; public double getCost() { return cost; } // There may be instance variables, constructors, and methods not shown. } The following method appears in a class other than Book. It is intended to sum all the cost instance variables of the Book objects in its ArrayList parameter. /* Precondition: bookList is not null / public static double getTotal(ArrayListBook bookList) { double total = 0.0; / missing code / return total; } Which of the following can replace / missing code / so the getTotal method works as intended? I. for (int x = 0; x bookL(); x++) { total += bookL(x).getCost(); } II. for (Book b : bookList) { total += Cost(); }