Output c#

Question

When I do this code in C# installed:

using System;
namespace ConsoleApplication1 {
public class Program {
public static void Main(string[] args) {
int a = 5;
int s = 0, c = 0;
Mul (a, ref s, ref c);
Console.WriteLine(s + "t " +c);
Console.ReadLine(); }
static void Mul (int x, ref int ss, ref int cc) {
ss = x * x;
cc = x * x * x; } } }

** The output = 25t 125

But I find this Website that answer it = 25 125

https://www.sanfoundry.com/csharp-mcqs-methods-class/

Which output is correct ( 25t 125 ) or ( 25 125 ) ???
With letter t or without it

Answer 1

https://code.sololearn.com/c0LVEneYY3Yp/?ref=app

Answer 2

25t 125