Select the true sentence(s) about markup languages. Select one or more: a. An XML Schema document is often referred to as an XSD (XML Schema Definition) and given the file extension .xsd . XML schema documents are, themselves, written in XML. b. In XML, a comment may appear anywhere in the document after the XML declaration and it is not ignored in parsing. c. An element with no content can be abbreviated to a single tag of the form . d. None of the options. e. An XML document can be seen as a specific kind of HTML document. Question 2 Six possible XML tags are displayed below: 1. 2. 3. 4. . 5. 6. Which of these answers are valid XML Tags? a. 1,2,4 b. 1,2,3,4,6 C. 1,2,4,5 Not yet answered Marked out of 1.00 Od. 1,2,3,5 Flag question Question 3 Not yet answered Marked out of 1.00 The following data is sent by HTTP when an HTML form is completed by a user and submitted: postcode=a+b&city=c Which of the below choices are valid HTML snippets of an input text box, which would produce such encoded data? a. b. C. None of the options. Flag question d. e.