SQL injection (SQLi) attacks attempt to inject SQL syntax into web requests, which may bypass authentication and allow attackers to access and/or modify data attached to a web application.
Which of the following SQLi types leverages a database server's ability to make DNS requests to pass data to an attacker?

A. In-band SQLi
B. Union-based SQLi
C. Out-of-band SQLi
D. Time-based blind SQLi