A "De Facto" Census Enumeration Covers Which of the Following

A "de facto" census enumeration covers which of the following:

A) An entire country and counts each person where they are at the time of enumeration.
B) A household of people on the day of enumeration.
C) An entire country or territory and counts them where they normally reside.
D) An entire country or territory and counts persons according to their geographic locations on the day of the census.
E) Only the largest states/provinces of a country