One Difficulty with Applying Edward T

One difficulty with applying Edward T.Hall's theories of nonverbal communication,including his definition of personal space,is

A) that the theory was written so long ago it is no longer applicable to our current moment.
B) that most nonverbal communication now takes place in an online setting.
C) that cultural differences play a major role in defining nonverbal communication like personal space.
D) that the theory was written from a male perspective and does not take into account women's experiences.