The following code fragment is intended to search for a value target in arr[0] to arr[n-1] and set found to true if it is found, but it does not work as intended.

/** Precondition:
 * - arr is an array of integers, arr.length = n.
 * - target is the value to search for.
 * Postcondition: found == true if target is in arr[0..n-1]; false otherwise. */
boolean found = false;
int i = 0;
while (i < n && !found) {
    i++;
    if (arr[i] == target)
        found = true;
}

For the segment to work as intended, which of the following modifications could be made?

I. Change the initialization int i = 0; to int i = -1; Make no other changes.

II. Change the loop condition to i < n - 1 && !found. Make no other changes.

III. Move the i++ statement to after the if statement in the loop body. Make no other changes.