Static variable inheritance

If the parent class declares a static variable, will the Child class share the same address or copy another one after inheritance? I don't understand. Write the code to verify it ~

Code
Public class father
{
Public static string test = "static variable of the parent class! ";
}
Public class Sona: Father
{
Public Sona (string Str)
{
Test = STR;
}
}
Public class sonb: Father
{
Public sonb (string Str)
{
Test = STR;
}
}
Class Program
{
Static void main (string [] ARGs)
{
Sona S = new Sona ("static variable of Sona ");
Sonb S1 = new sonb ("static variable of sonb ");
Console. writeline (father. test );
Console. writeline (SONA. test );
Console. writeline (sonb. test );
Console. Read ();
}

Running result:

It is self-evident that child classes and parent classes share the same address.