During 2013, Jenny, age 14, lives in a household with her father, uncle, and grandmother. The household is maintained by the uncle. The parties, all of whom file separate returns, have AGI as follows: father $$(\$ 30,000)$$, uncle $$(\$ 50,000)$$, and grandmother $$(\$ 40,000)$$.
a. Who is eligible to claim Jenny as a dependent?
b. Who has preference as to the exemption?