One Reason Why Consumption Accounts for More of GDP in the U.S.than

One reason why consumption accounts for more of GDP in the U.S.than it does in Canada is

A) Americans are more materialistic.
B) spending on health care is often counted as consumption in the U.S.and not in Canada.
C) Americans are less concerned about the future than Canadians.
D) there is less for consumers to buy in Canada.
E) Canadian save much more than Americans.