Which of the Following Best Describes How Gender Rules Work

Which of the following best describes how gender rules work?

A) Gender rules allow for few exceptions and usually carry serious penalties when they are broken.
B) People who strictly follow a single set of unambiguous gender rules are usually considered the ideal man or woman of their society.
C) We stop doing gender whenever we break gender rules.
D) Sometimes we break gender rules because it is impossible to follow them, no matter how hard we try.