The Little Swan Song and Dance Troupe have 45 young actors. About these 45 young actors, A. B and C have the following discussion: A said: "Some of these young actors are Beijingers. " B said: "Li Xinxin among the young actors is not Beijing, "C. said," Some of these little actors are not from Beijing. "In fact, only one sentence of the three is true. Excuse me, which of the following options is true? ['5 young actors are not from Beijing.', 'Some little actors are not from Beijing.', 'Li Xinxin is not from Beijing.', '5 young actors are all from Beijing.']