1. Joan, 45 years old and unmarried, contributed $1,200 monthly in 2011 to the support of her parents' household. The parents lived in an apartment rented by Joan and their income for 2011 consisted of $800 in interest. What is Joan's filing status and how many exemptions should she claim on her 2011 tax return? (Points : 2)

None of these
Head of household and 1 exemption
Head of household and 3 exemptions
Single and 3 exemptions