The population of country X is exactly the same as country Y but country X produces twice as much output as country Y. We can conclude that
(A)the people of country X are smarter than the people of country Y. (B)the people of country X enjoy a standard of living twice as much as country Y. (C)the people of country Y enjoy a standard of living twice as much as country X. (D)the people of country Y work twice as hard as the people of country X.
B