Select which statement correctly describes the XML document below.
<!DOCTYPE element1 [
<!ELEMENT element1 (#PCDATA)>
]>
<element1><![CDATA[<element2/><![CDATA[<element3/>]]></element1>

Choose the statement about a difference between XML and HTML that is incorrect.

Press the Exhibit button to view "XML Document". For the elements within "XML Document", select which of the following correctly describes the coding for (1) in which the "Order_Number" element belongs to namespace urn:sample:Order, and there are no errors with respect to XML namespace specifications.

Press the Exhibit button to view "Transformation Source XML Document". Select which of the following correctly describes the XPath method combination belonging in (1), (2) and (3) of the "XSLT Stylesheet" when acquiring the text string "Taro_Suzuki" from the "Transformation Source XML Document".

Select which DTD element type declaration correctly defines the "XML Documents" structure below.
[XML Documents]
<Documents> <Product_Name>black pen</Product_Name>
+
<Product_Name> red pencil </Product_Name>
=
<Price>100</Price>
yen.
</Documents>