Recursion Tracing Exercise: Fix the error in print

Which proposed code change will result in this code properly inserting commas? public static void writeThreeDigits(int n) { System.out.print(n / 100); System.out.print((n / 10) % 10); System.out.print(n % 10); } public static void writeWithCommas(int n) { if (n < 1000) System.out.print(n); else { writeThreeDigits(n%1000); System.out.print(","); writeWithCommas(n/1000); } }

Interchange the line: writeThreeDigits(n%1000); with the line: writeWithCommas(n/1000);.

Change the line: writeWithCommas(n/1000); to be writeWithCommas(n%1000);
Change the test in writeWithCommas to be if (n > 1000)
Interchange the line: System.out.print(n/100); with the line: System.out.print(n%10); in writeThreeDigits.
Replace the line: writeThreeDigits(n%1000); with the line: writeThreeDigits(n/1000);.

The problem is that the blocks of digits are put in reverse order.