A Research Assistant Is Preparing a Graph Showing Personal Income

Multiple Choice

A research assistant is preparing a graph showing personal income and happiness in industrialized nations from the 1940s through the 1990s. How should the graph look

A) The line depicting personal income should be positively sloped.The line depicting happiness should be negatively sloped.
B) The line depicting personal income should be positively sloped.The line depicting happiness should be more or less horizontal.
C) The line depicting personal income should be positively sloped.The line depicting happiness should also be positively sloped, but slightly less steeply.
D) The line depicting personal income should be more or less horizontal.The line depicting happiness should be negatively sloped.