nayana-c1.867c992ae9100904cc61c84591adf0f8f863e0387e30f0d0dbc86640e9f50a1a.en.train.43371

The task

Which of the following statements is true about the conductivity tensors of the polycrystal? A. Each layer has a conductivity tensor Cv @v, where v € S$1(R?), C = a for type A and C = £ for type B. B. The conductivity tensor of the crystal is formed by the superposition of three simple layers. C. The value @(x) represents the global proportion of layers of type B at the point x. D. The I-closures of discrete and continuous polycrystals are different. Return only the single uppercase letter of the correct option.