Which of the following should the developer integrate into the process to BEST prevent this type of behavior?

An application developer is including third-party background security fixes in an application. The fixes seem to resolve a currently identified security issue. However, when the application is released to the public, report come In that a previously vulnerability has returned .

Which of the following should the developer integrate into the process to BEST prevent this type of behavior?
A . Peer review
B . Regression testing
C . User acceptance
D . Dynamic analysis

Answer: A