Correct option is A
Curie–Weiss Law is a modified form of Curie’s Law for ferromagnetic materials above the Curie temperature.It states:χ=T−θCWhere:∙χ=Magnetic susceptibility∙C=Curie constant∙T=Absolute temperature∙θ=Weiss constant (accounts for internal molecular field)This law indicates that susceptibility decreases with increasing temperature but includes a correction due to molecular interaction.

