A bar magnet made of steel has a magnetic moment of $2\mathrm{.}5A{m}^2$ and a mass of $6\mathrm{.}6g.$ The intensity of magnetization of the magnet is $($take the density of steel $=7\mathrm{.}9{10}^{3}kg{m}^{-3})$

Select one:

a$.3\mathrm{.}0{10}^{-2}A{m}^{-1}$

b$.2\mathrm{.}0{10}^{-6}A{m}^{-1}$

c$.3\mathrm{.}0{10}^{6}A{m}^{-1}$

d$.1\mathrm{.}0{10}^{6}A{m}^{-1}$