A. Non resident Alien required to get an ITIN to claim tax treaty benifit

B. Non resident alien filing a U.S fedral tax return

C. U.S. resident alient filing a U.S. fedral tax return

D. Dependent of U.S. citezen/resident alien

E. Spouse of U.S. citezen/resident alien

F. Non resident alien student, professor or researcher filing a U.S. federal tax return or claiming an tax exception

G. Dependent/spouse of a non resident alien holding a U.S. visa

H. Other