Which of the Following Statements About Stages of International Development

Which of the following statements about stages of international development is not true?

A) firms always move sequentially through the stages of international development since they need to have the experience of one level to move on to the next.
B) some firms skip stages of international development depending on the situation.
C) service firms are more likely to skip the first stages of international development.
D) all of these.
E) none of these.