May, age 19, and Clyde, age 22, are married. both are full time students, and both have jobs. may earned $18,500 and Clyde earned $16,800 in 2021. they spent their earnings on paying for rent, utilities, and food. they plan to file a joint return. Clyde's parents paid all his tuition and want to claim him as a dependent so they can claim an education credit. can Clyde's parents claim him as a dependent if he files a joint return with May?