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To Declare an ID Attribute as Optional in the Source

Question 83

Multiple Choice

To declare an ID attribute as optional in the source document's DTD, use the expression _____.


A) <!ATTLIST element attribute ID #OPTIONAL>
B) <!ATTLIST element ID #IMPLIED attribute>
C) <!ATTLIST element ID #OPTIONAL attribute>
D) <!ATTLIST element attribute ID #IMPLIED>

Correct Answer:

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