Which of the Following Is Correct with Respect to Organizational

Which of the following is correct with respect to organizational structure?

A) Once an organizational structure is in place,it tends not to change much until the next major change is made.
B) Because of the busy environment that defines most organizations,structure can sometimes develop without much planning.
C) The organization's purpose,mission,and strategy are not particularly important factors in the structure an organization adopts;rather,the most important factor is executive preferences.
D) An organization's structure is largely the result of rational planning,and the preferences of managers do not generally influence the decision of which structure to adopt.
E) All of these are correct.