These are questions and the model answers, provided by the exam provider Head First. I have a disagreement on the supplied answers and wondering about your opinions?? I am very sure about some of them... Or !!

I supply the questions, then the model answes and my own answers... what do you think

1- Which of the following is NOT an input to Perform Quality Control?
A  Deliverables 
B  Work Performance Measurements 
C Quality Checklists 
D Validated Changes