The past few years have seen a continued uptick in the stock market. Often times, the U.S. economy is said to be "doing quite well." However, as we discussed in class, U.S. median household income has remained relatively flat, and so has household spending. What is a major contributing factor to this phenomena? Group of answer choices Home ownership has increased, but property values have not caught up to their level of the 1990s. Unemployment levels are still high. The U.S. population average age is increasing The majority of U.S. households do not have significant investment in stocks