AP CSP Practice Test On Arrays (ArrayList And 2D Arrays)

Questions refer to the Ticket and Transaction classes below public class Ticket { private String row; private int seat; private double price; //constructor public Ticket(String aRow, int aSeat, double aPrice) { row = aRow; seat = aSeat; price = aPrice; } //accessors getRow(), getSeat(), and getPrice() ... } public class Transaction { private int numTickets; private Ticket[] tickList; //constructor public Transaction(int numTicks) { numTickets = numTicks; tickList = new Ticket[numTicks]; String theRow; int theSeat; double thePrice; for (int i = 0; i < numTicks; i++) { < read user input for theRow, theSeat, and thePrice > ... /* more code */ } } /** @return total amount paid for this transaction */ public double totalPaid() { double total = 0.0; /* code to calculate amount */ return total; } } Which represents correct /* code to calculate amount */ in the totalPaid method?