New PMP Question & Answers with explanation

In quality terms, one of the meanings of “out of control” is:
Select one
Your customer requested that the new railroad cars you are building for his company be constructed from heavy grade aluminum. After reviewing the requirements, two of your experts inform you that the customer would be better off with steel cars. You meet with the customer to discuss the issue, and he directs you to go ahead with the aluminum cars. What should you do?
Select one
A project is facing a major change to its project deliverables. If the project manager is involved in determining which quality standards are relevant to the change. The project manager must be involved in:
Select one
Which of the following is an example of a tool used in quality planning?
Select one
All of the following are part of the perform quality control process except?
Select one