No one will be admitted to Yale Law School unless he or she studies hard for the LSAT. No one studied hard for the LSAT unless he or she was not a graduate from Tri-State University.

Which one of the following conclusions necessarily follows from the above statements?

A. No graduate of Tri-State University was admitted to Yale Law School

B. Some graduates of Tri-State University were admitted to Yale Law School

C. All graduates of Tri-State University studied hard for the LSAT

D. Only graduates of Tri-State University did well on the LSAT

E. Only college graduates did well on the LSAT

OA A