Which statements of the painting Broken Star are true?

A、The painting Broken Star was drawn by Leonardo Nierman.;

B、Transparency, which tends to produce a close spatial relationship, is clearly evident in the triangles of this painting.;

C、The implied triangular shapes of this artwork overlap, remain transparent, and create a shallow space that contrasts with the deeper space behind.;

D、The precise, hard-edged geometric shapes in this work are a legacy of Cubism.