Which of the Following Is NOT a Controversy Related to Sex

Which of the following is NOT a controversy related to sex and gender?

A) The idea that there are only two sexes and two genders is an oversimplification and not accurate for all cultures or medical conditions.
B) Not everyone with a vagina considers themselves a woman,and not everyone who considers themselves a woman has a vagina.
C) Feminist psychologists encourage a more complex and complicated dialogue when exploring sex and gender in psychological research.
D) There is not a tendency to confuse sex and gender in psychological research.