Multiple choice technology programming languages Which statement is true? All the statements are true All XML elements must have a closing tag All XML elements must be lower case All XML documents must have a DTD Reveal answer Fill a bubble to check yourself B Correct answer Explanation XML requires all elements to have a closing tag (or self-close like ). XML is case-sensitive but doesn't require lowercase. DTD is optional for XML - well-formed XML doesn't need a DTD. Only option B is universally true for XML.