Among the following, for which substance does the magnetic susceptibility not depend on the temperature?

Magnetic susceptibility of $Mg$ at $300 \ K$ is $1.2 \times 10^{-5}$. What is its susceptibility at $200 \ K$?

There are $2.0 \times 10^{24}$ molecular dipoles in a paramagnetic salt. Each has a dipole moment of $1.5 \times 10^{-23} \text{ A m}^2$. Find the maximum (saturation) magnetization in the specimen. (in $\text{ A m}^2$)

Which of the following is most suitable for the core of electromagnets?

Magnetic permeability is maximum for

Given below are two statements:
Statement $I$: The diamagnetic property depends on temperature.
Statement $II$: The induced magnetic dipole moment in a diamagnetic sample is always opposite to the magnetizing field.
In the light of the given statements,choose the correct answer from the options given below: