In May of 2011 the number of people unemployed was 10 million, while the number of people in the labor force was 150 million. A year goes by and 2 million people drop out of the labor force due to the weakening of the labor market. Thus, in May of 2012 the number of unemployed was 8 million, while the number of people in the labor force was 148 million. What happened to the unemployment rate during this time period and what caused the change? Group of answer choices The unemployment rate dropped due to people dropping out of the labor force The unemployment rate increased due to people dropping out of the labor force The unemployment rate stayed the same due to the weakening of the labor market The unemployment rate stayed the same due to people dropping out of the labor force