Which of the following pair of acronyms and its expansion is incorrectly matched?

Correct option is D

XML - Extensible Markup Language: Correct. XML is a markup language used to define rules for encoding documents in a format that is both human-readable and machine-readable.
WWW - World Wide Web: Correct. The WWW is a system of interlinked hypertext documents accessed via the Internet.
VLSI - Very Large Scale Integration: Correct. VLSI refers to the process of creating integrated circuits by combining thousands or millions of transistors into a single chip.
SMS - Short Message Software: Incorrect. The correct expansion of SMS is Short Message Service, which is a text messaging service component of most telephone, internet, and mobile communication systems.
Information Booster:
1. XML: Used in web development, data storage, and transfer between systems.
2. WWW: A major part of the Internet where users access websites via browsers.
3. VLSI: Foundational technology for modern electronics, enabling compact and efficient chips.
4. SMS: A widely used communication method for sending short text messages, limited to 160 characters in GSM networks.