In Research Done in School Settings, It Generally Is Wise

In research done in school settings, it generally is wise for the researcher to

A) get approval from the teachers who will be involved before contacting the superintendent or principal.
B) conceal the true purpose of the research from the teachers whose students may be involved in it.
C) maintain distance from school personnel in order not to bias the results.
D) think of ways to ensure that aspects of the study will provide direct benefits to the school.