Sonny Salazar was deployed in a combat zone for all of 2022. He is married and has two children. Sonny's nontaxable combat pay in 2022 is $14,000. His wife worked part-time while Sonny was deployed and earned $7,000. What is the maximum amount of earned income the Salazars can report for Earned Income Tax Credit (EITC) purposes in 2022?

$7,000

$14,000

$21,000

$28,000