The susceptibility ($X_m$) and permeability (μ) of a perfectly diamagnetic substance are:

$X_m=-1$ and $μ=0$ $X_m=0$ and $μ=1$ $X_m=1$ and $μ=-1$ $X_m=1$ and $μ=0$

$X_m=-1$ and $μ=0$

The correct answer is Option (1) → $X_m=-1$ and $μ=0$