Magnetic susceptibility for a paramagnetic and diamagnetic material is respectively

If a magnetic substance is kept in a magnetic field,then which of the following is thrown out?

The variation of the intensity of magnetisation $(I)$ with respect to the magnetising field $(H)$ in a diamagnetic substance is well described by the graph

To protect an instrument from an external magnetic field,it is completely surrounded by:

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$. Consider a ferromagnetic material:
Assertion $(A)$: The individual atoms in a ferromagnetic material possess a magnetic dipole moment and interact with one another in such a way that they spontaneously align themselves forming domains.
Reason $(R)$: At high enough temperature,the domain structure of a ferromagnetic material disintegrates. Thus,magnetization will disappear at a high enough temperature known as the Curie temperature.
In the light of the above statements,choose the correct answer from the options given below:

The most appropriate magnetization $M$ versus magnetising field $H$ curve for a paramagnetic substance is