During the Past 50 Years, the Production Possibilities of the United

Multiple Choice

During the past 50 years, the production possibilities of the United States have expanded, increasing both short-run and long-run aggregate supply. Other things constant, this would lead to

A) an expansion in output and an increase in prices.
B) an expansion in output and a decrease in prices.
C) no change in either output or prices.
D) no change in output and a decrease in prices.