Classes and Objects - General Questions

What is the output of the following program?

var a = new P { X = 1 };
var b = new P { X = 1 };
Console.WriteLine(a == b);
class P { public int X; }

What is the output of the following program?

var c = new Counter();
c.Add(); c.Add();
Console.WriteLine(c.Value);
class Counter
{
    public int Value { get; private set; }
    public void Add() => Value++;
}

What is the output of the following program?

var p = new Person("Asha");
Console.WriteLine(p.Greet());
class Person
{
    private readonly string name;
    public Person(string n) { name = n; }
    public string Greet() => "Hi " + name;
}

Which keyword refers to the current instance inside a method?

An object that is no longer referenced is removed by: