11 甲、乙為兄弟,丙、丁為姊妹。甲、丙結婚,乙、丁之親屬關係為何?
(A)無親屬關係
(B)二親等旁系姻親
(C)四親等旁系姻親
(D)五親等旁系姻親
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統計: A(382), B(177), C(83), D(13), E(0) #2781012
統計: A(382), B(177), C(83), D(13), E(0) #2781012