Geert Hofstede defines national culture as:

A) the abstract system of signs common to every community of the world.
B) the universal system of forms and conventions used by man.
C) that component of the human mind which is exclusive to every individual.
D) that component of our mental programming which we share with more of our compatriots as opposed to most other world citizens.
E) that component of our mental programming which we share with people from other cultures.