Which of the following are true? 1) In the past 3 months the National Bureau of Economic Research declared that the U.S. is currently experiencing its worst recession since the Great Depression. 2) In April, unemployment reached its highest level since tracking began in 1948. 3) During the same period that both of the above occurred, the stock market (S&P 500) had its best quarter in more than 20 years. 4)All of the above.