How to check if a string starts with a space c#?

Question

C++ / C#

using System;
using System.Security.Cryptography;

namespace lab4
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Введiть 3 будь-якi рядки");
            String r1 = Console.ReadLine();
            String r2 = Console.ReadLine();
            String r3 = Console.ReadLine();
             StartsWith( r1, -);

        }
    }
}

Answer 1

string text = "   ssd";
if (text.StartsWith(" "))
{
}

Answer 2

if(r1[0]==" ")
Something like this, however, there is https://docs.microsoft.com/ru-ru/dotnet/api/system...

Answer 3

if(text?.StartsWith(" ") == true) {
}