Which Two Characteristics of a Build Tool That Is Used

Which two characteristics of a build tool that is used in an automated build pipeline? (Choose two.)

A) It runs unit tests against code that is committed.
B) It builds your software on the production environment.
C) It builds your software when changes are committed.
D) It builds your software every 500 milliseconds.
E) It must have a plug-in for Puppet and Maven.