Which One of the Following Is Not a Major Factor

Which one of the following is not a major factor distinguishing service design and development from manufacturing design and development?

A) The process and product must be developed at the same time.
B) Many service organizations can change their service offerings virtually overnight.
C) Many parts of the service package are often defined by the training that individuals receive before they become part of the service organization.
D) The service package, rather than a definable good, is the output of the development process.
E) Service operations can be protected by patents; manufacturing operations cannot.