In software engineering what is a build script used for?

Choice 1 of 5:A build script is written in pseudo-JCL as a file to create a build plan.

Choice 2 of 5:A build script is used to automate copying directories to save time on manual tasks.

Choice 3 of 5:A build script automates the retrieval of binary code, executing source code and publishing it centrally

.Choice 4 of 5:A build script automatically builds and tests a deployable version of the working system

.Choice 5 of 5:A build script is used by the Help Desk to explain how to build the system.