Jamarcus, a full-time student, earned $2,500 this year from a summer job. He had no other income this year and

Jamarcus, a full-time student, earned $2,500 this year from a summer job. He had no other income this year and will have zero federal income tax liability this year. His employer withheld $300 of federal income tax from his summer pay. Is Jamarcus required to file a tax return? Should Jamarcus file a tax return?