Implemented change request, implemented corrective actions and implemented preventive actions are inputs to which process?

Correct answer is 

D. Perform quality assurance

D. Perform quality assurance

My opinion is that the right answer is:D. Perform quality assurance

Even though both B and D are close to correct answers, I would prefer Option D Quality Assurance, since Implementing Change request, Corrective Action and Preventive action are action for Quality Audit

I agree with Mr Tarek, d is the suitable answer.

I think option D is the correct answer

thanks for invition ,,,,,,,,,, my choice is option D

I think the best option (E) as a Agile process. thanks.

in quality it is related to quality assurance as previously answered , in maintenance it is related to preventive and corrective  maintenance