The root element of an XHTML document must be html, and must contain an __________ attribute to associate it with the XHTML namespace.

A. True B. False

A. In traditional XHTML close tag for some elements is optional but not encouraged B. In traditional HTML close tag for some elements is optional but not encouraged C. None of the mentioned D. In both traditional XHTML and HTML close tag for some elements is optional

A. Charset in html is “text/html” where as in xhtml it is “application/xml+xhtml” B. None of the mentioned C. Tags and attributes are case-insensitive in HTML but not in XHTML D. Special characters must be escaped using character entities in XHTML unlike HTML

A. The extension of the file “.html” B. The “content-type” header C. Both “.html” extension and “content-type” header D. None of the mentioned