Which of the following statements about the economic impact of the COVID-19 pandemic is true? a. The wealth of the wealthiest increased substantially. b. Most of the economic impact, such as layoffs, was felt by people who were low-income to begin with -- servers, cooks, and counter-workers at restaurants, people who worked at retail stores, and so on, that were more likely to close. c. The huge stimulus packages adopted by the federal government did a lot to reduce the economic damage. d. All of these answers are true