I can't reach static class field from instance variable : <p>I'm wondering I can't reach static class field from instance variable</p>

<pre><code>    class aa
    {
        public static string b = "bb";
    }

    Console.WriteLine(aa.b); //fine
    aa f = new aa();
    f.b //error
</code></pre>

<p>Why? Do I make something wrong?</p>
