Question: Which is NOT a valid step in configuring your Django 2.x instance to serve up static files such as images or CSS?

1. In your urls file, add a pattern that includes the name of your static directory.
2. Create a directory named static inside your app directory.
3. Create a directory named after the app under the static directory, and place static files inside.
4. Use the template tag {percentage mark load static percentage mark}.

Answer: The correct answer of the above question is Option A:In your urls file, add a pattern that includes the name of your static directory.