Please answer the 4 multiple-choice questions.

1- With regard to Quality concepts: "Working with infrastructure for delivering quality" is directly related to ..... Quality Control Quality Management System Quality Assurance DMAIC improvement cycle 2- With regard to Quality concepts: "establishing a communication channel" is directly related to .... Quality Control Quality Management System DMAIC improvement cycle Quality Assurance 3- With regard to Quality concepts: "In-process reviews" is specifically associated with .... DMAIC improvement cycle Quality Assurance Quality Management System Quality Control 4- Which of the following quality costs are failure costs? equipment calibration costs customer satisfaction survey costs product recall costs pre-dispatch inspection costs