Don is a single parent.His son is 19 (not a student), and his daughter is 17 (still a student).Don claimed EIC on his tax return for both children.He later received a letter from the Internal Revenue Service which disallowed EIC for his son.The letter also stated that Don's claim was an error due to reckless or intentional disregard of the EIC rules.For how many years will Don be denied EIC?