The Economic Research on Human Happiness, Human Psychology, and Neuroscience

The economic research on human happiness, human psychology, and neuroscience suggests that, among other things:

A) short-term and long-term human happiness do not depend on the exact same set of variables.
B) economic policies designed to satisfy people's immediate concerns do not necessarily maximize humans' lifetime happiness.
C) welfare functions are not constant, or stable, over time.
D) All of the above.
E) None of the above.