1. There must be one and only one document element. 2. Every open tag must be closed. 3. If an element is empty, it still must be closed. * Poorly-formed: * Well-formed: * Also well-formed: 4. Elements must be properly nested. * Poorly-formed: * Well-formed: 5. Tag and attribute names are case sensitive. 6. Attribute values must be enclosed in single or double quotes. Choose the best suitable answer
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  1. A well-formed document should follow all the above rules

  2. A well-formed document may follow 1, 3, 4

  3. A well-formed document may follow 2, 4, 5, 6

  4. A well-formed document may follow 2, 3, 4 ,5

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Correct Option: A

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