Linda perkins (56) shared a home all year with her son, kevin (38), and kevin's son, jared (20). linda and kevin worked full time, and jared was a part-time student. no one else lived in the home. linda has earned income and an agi of $29,694, and kevin has earned income and an agi of $23,157. beth wilson (17) is a dependent of her parents. she earned $1,475 wages from babysitting and $180 interest from her savings account. how much is the maximum she may contribute to a traditional or roth ira for 2018?

a. $0

b. $1,475

c. $1,655

d. $4,000