Which of the following historical items would NOT be used by the Warren Commission to determine exactly what happened during the assassination of President John F. Kennedy? Fragment of the nose of a bullet found in the front of the presidential limousine following the assassination of President John F. Kennedy

The Mannlicher-Carcano rifle owned by Lee Harvey Oswald

A description of the grave of President John F. Kennedy at Arlington National Cemetery

Aerial map of Dealey Plaza in Dallas, Texas, on November 22, 1963 showing the route of President John F. Kennedy's motorcade.