Which of the following forms of evidence would be the most convincing, with respect to the EITC's labor force participation incentives? Multiple choice question. Surveying participants to see if they were working before and after becoming eligible for EITC. If the program's costs exceed the $10 billion budget allocated by the Federal government. Asking participants whether they are happier than before they were claiming the EITC. Comparing newly eligible households' participation to see if it's more than similar non-eligible households