Question: XML is a markup language, not a programming language. What makes XML not qualify to be a programming language?

1. XML is too flexible and does not have enough reserved keywords.
2. XML contains only data and not any processing instructions.
3. XML does not perform any computation or algorithms.
4. XML does not have specialized syntax rules.

Answer: The correct answer of the above question is Option B:XML contains only data and not any processing instructions.