Which of the following are true about document type definition (DTD)?

A. A DTD defines the structure and attributes of an XML document.

B. With DTD, independent group of people can agree on a standard for interchanging data.

C. If DTD is declared inside XML file, it must be wrapped inside the definition.

D. The Library of Congress has made available a DTD to convert MARC records to XML.

E. DTD is used to ensure the authenticity of data transmitted across the web.

Choose the most appropriate answer from the options given below: