Case 12-1 Casey Is Using XML to Store Information About the Students

Multiple Choice

Case 12-1
Casey is using XML to store information about the students in the science classes that he teaches. He wants to design a DTD that he can use to validate the XML documents that he uses for this purpose, and he comes to you for help.

-Casey next wants to write a declaration for an element named "advanced" that he will use to record the fact that a student is advanced.This element will not contain any content.Which of the following is an appropriate element declaration for this element?

A) <!ELEMENT advanced NONE>
B) <!ELEMENT advanced EMPTY>
C) <!ELEMENT advanced>
D) <!ELEMENT advanced NIL>