Task: Instance Class Understanding (ontology: Sciences/Computer_Science)

Which of the following classes does 'RDF' belong to as one valid explicit type? Context: RDF is a format standard of a digital entity that is conformant with the W3C Resource Description Framework RDF/XML Syntax specification.(http://www.w3.org/RDF/)

A. Open Data Commons
B. Derivatives clause
C. data format specification
D. plan specification

Answer: data format specification