Which one of the following is NOT part of the service design stage of the service lifecycle?

A.
Designing and maintaining all necessary service transition packages
B.
Producing quality, secure and resilient designs for new or improved services
C.
Taking service strategies and ensuring they are reflected in the service design processes and the
service designs that are produced
D.
Measuring the effectiveness and efficiency of service design and the supporting processes
Question was on May 2015 ITILF 2011 test
In my opinion correct answer is D.
Part of Service Design Stages:
Designing and maintaining all necessary service transition packages
Producing quality, secure and resilient designs for new or improved services
Taking service strategies and ensuring they are reflected in the service design processes and the service designs that are produced