单项选择题
A.1/8(不分线到线或线到边) B.3/16(不分线到线或线到边) C.1/4(不分线到线或线到边) D.5/16(不分线到线或线到边)
A.5/16 B.3/8 C.5/8 D.11/16
A.1/16;3/16 B.1/8;3/16 C.1/16;1/4 D.1/8;1/4