John,age 25,is a Full-Time Student at a State University

John,age 25,is a full-time student at a state university.John lives with his unmarried sister,Ann,who provides over half of his support.His only income is $4,000 of wages from a part-time job at the college book store.What is Ann's filing status for 2013?

A) Single
B) Head of household
C) Married,filing separately
D) Qualifying widower)
E) None of the above