Which of the following statements is true of user acceptance testing $($UAT$)?$

A goal of UAT is to determine the work load at which systems performance begins to degrade.

UAT must be completed successfully before newly developed software can be rolled out to the market.

UAT is often done by independent testers who were not involved in developing program code.

UAT involves linking individual components together and testing them as a group to uncover any defects in the interface.