The Biggest Difference Between the Health Care System in the U.S

The biggest difference between the health care system in the U.S., compared to that of other nations, is that:

A) the U.S. spends far less on health care than other countries
B) health outcomes in the U.S. are much better than in countries with socialized medicine
C) we control costs through competition among private health care providers
D) many health outcomes compare poorly to peer nations', despite higher per capita costs