What should be changed in the code snippet below to fix average(double[][] values) so that it returns the average value of all the values in values?

public static double average(double[][] values) {
    double sum = 0;
    int count = 0;
    for (double x: values) {
        for (double y: x) {
            sum += y;
            count++;
        }
    }
    return sum/count;
}

1. Correct Answer
   Incorrect Answer
   a

   Change line 4 to: for (double[] x: values) {

2. Correct Answer
   Incorrect Answer
   b

   Change line 5 to: for (double[] y: values) {

3. Correct Answer
   Incorrect Answer
   c

   Change line 6 to: sum += values[x][y]

4. Correct Answer
   Incorrect Answer
   d

   Both (a) and (c)

5. Correct Answer
   Incorrect Answer
   e

   (a), (b), and (c)