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Which options are true regarding a well-formed XML document?

28. Which options are true regarding a well-formed XML document?

1. Each tag must have a closing tag
2. The opening and closing tag are the same i.e., their case must be the same
3. The child tag must be closed within the parent tag i.e., as per the order, before closing the parent tag.
4. All of the above

Answer: D) All of the above

Explanation:

All the above options (A, B, and C) and true to write a well-formed XML document,

• Each tag must have a closing tag
• The opening and closing tag are the same i.e., their case must be the same
• The child tag must be closed within the parent tag i.e., as per the order, before closing the parent tag.