Please help to answer the bold question on below Java code. import java.util.*;

public class Main { // Test Data for the program private static String[] moduleCode = {"ITD2322", "ICT2422", "ITD2321", "ICT2669"}; private static String[] studentID = {"1", "2", "3", "4", "5", "6", "7", "8"}; private static int[][] marks = { {30, 40, 50, 60, 45, 55, 65, 75}, // mark for ITD2322 {80, 70, 60, 40, 34, 56, 78, 90}, // mark for ICT2422 {76, 45, 67, 89, 12, 45, 67, 54}, // mark for ITD2321 {56, 76, 54, 55, 50, 43, 66, 44}}; // mark for ICT2669

public static void main(String[] argv) { if (argv.length != 2) { System.out.println("Usage: java Main {average | median | beststudent} "); System.exit(1); } String action = argv[0]; String mCode = argv[1]; if (action.equalsIgnoreCase("average")) { System.out.print( calculateModuleAverageMark(mCode)); }

// else if the user wants to find the median mark of a module, // call the calculateModuleMedian method and show the result in DOS prompt

// else if the user wants to find the best students (may have more than 1 best student) of a module, // call the displayBestStudent method

// else show the message on how to run the program in DOS prompt and exit the program

}

public static double calculateModuleAverageMark(String mCode) { int mIdx = getModuleIndex(mCode); if (mIdx>=0) { int[] mMarks = marks[mIdx]; double total = 0; for (int i=0; i

}

public static double calculateModuleMedian(String mCode) { return 0;

// return the median mark of a module (module code as input parameter "mCode")

}

public static void displayBestStudent(String mCode) {

// find the highest mark of a module (module code as input parameter "mCode") // then find the studentID(s) of student(s) with the highest mark // show the above information in DOS prompt

}

public static int getModuleIndex(String mCode) { for (int i=0; i// return the index of a module (module code as input parameter "mCode") in the array of moduleCode

// You may need to call this method when you want to find the average mark, the median // or the best student of a module.

} }