xml question

The following is question regarding xml. I am not sure of the answers.

Question:

Consider the following example XML document:

?xml version="1.0" encoding="ISO-8859-1" ?
!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"
head
title XML Example /title
/head
body
p
Moved to a href="http://example.org/" http://www.example.org//a.
br
/p
/body
/html
What is wrong with this document, and how can it be corrected?


Answer: (choose 2)

1. The document is completely valid
2. All special XML characters must be represented as entities within the content of a node
3. All tags must be closed
4. You cannot specify a namespace for the html attribute
This is not right. one can specify a namespace for the html attribute.
5. The DOCTYPE declaration is malformed
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