单项选择题
等边角钢截面已知形心为C,对y轴的惯性矩Iy=3175cm4,Imax=5045cm4,(图5-5-11),则Imin等于:()
A.560cm4 B.935cm4 C.1305cm4 D.1870cm4
A.A B.B C.C D.D