A solid material is found to have a temperature independent magnetic susceptibility, X = C. Which of the following statements is correct? (a) If C is positive, the material is a diamagnet. (b) If C is positive, the material is a ferromagnet. (c) If C is negative, the material could be a type I superconductor. (d) If C'is positive, the material could be a type I superconductor.

A solid material is found to have a temperature independent magnetic susceptibility, X = C. Which of the following statements is correct? (a) If C is positive, the material is a diamagnet. (b) If C is positive, the material is a ferromagnet. (c) If C is negative, the material could be a type I superconductor. (d) If C'is positive, the material could be a type I superconductor.