Jackson, a Social Media Editor for Early Times, Identified That

Jackson, a social media editor for Early Times, identified that there are exploitable zero-day vulnerabilities in many of the open source protocols and common file formats across software used by some of the specific industries. To identify vulnerabilities in software, he had sent malformed or random input to the target software and then observed the result. This technique helps in uncovering zero-day vulnerabilities and helps security teams in identifying areas where the quality and security of the software need to be improved. Identify the technique used by Jackson to uncover zero-day vulnerabilities?

A) Application fuzz testing
B) Application black testing
C) Source code review
D) Application white testing