Absolute value

Given an integer, write a method that returns its absolute value.
Expected input and output
AbsoluteValue(6832) → 6832 AbsoluteValue(-392) → 392
using System;

namespace CSharpExercises.Exercises.Conditional_statements
{
    class AbsoluteValueTask
    {
        static int AbsoluteValue(int number)
        {
            return number >= 0 ? number : number * -1;
        }

        static void Main(string[] args)
        {
            Console.WriteLine(AbsoluteValue(-690543));  // 690543
            Console.WriteLine(AbsoluteValue(2744));     // 2744
            Console.WriteLine(AbsoluteValue(0));        // 0           
            Console.WriteLine(AbsoluteValue(-23));      // 23
        }
    }
}