____ is a set of markup declarations that define a document type for SGML-family markup languages (SGML, XML, HTML)

____ is a set of markup declarations that define a document type for SGML-family markup languages (SGML, XML, HTML)

____ is a set of markup declarations that define a document type for SGML-family markup languages (SGML, XML, HTML) 





a. Document Type Definition
b. Document Definition Language
c. Document Manipulation Language
d. Document Control Language


Answer: A


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