Choice "A" is correct. XBRL, the acronym for eXtensible Business Reporting Language, is derived from XML (eXtensible markup language). XBRL is an open, royalty-free, Internet-based information standard for business reporting of all kinds. XBRL labels data so that they are provided with context that remains with them and brings conformity to the names by which they are recognized by disparate software.
Choice "d" is incorrect. Linux is an operating system that serves as a platform for various applications, not a basis for data aggregation, transfer, etc.
Choice "b" is incorrect. Hypertext Transfer Protocol (HTTP) is the communications protocol used to transfer web pages on the World Wide Web.
Choice "c" is incorrect. CAT5 is a hardware/communications term that refers to transmission media.