How to Access Protected Method and/or Class from Other Class in C#

Question

Just for example, let's say I have something like this

protected class A{
protected void x() {
//some code
}
}

Then how to call the void x() outside from the class A? I've tried to do something like this

sealed class B : A{
static void Main(){
A n = new A();
n.x();
}
}

But it's not working. Please help me with this

Answer 1

in non-static method in class B you can access x() like that: this.x().