Which is low spin complex?

${\mathrm{CN}}^{-},{\mathrm{NO}}_2^{-}\mathrm{are} \mathrm{strong} \mathrm{field} \mathrm{ligands}.$
$\begin{array}{l}{\left[\mathrm{Fe}(\mathrm{CN}{)}_6\right]}^{3-}\hspace{0.25em}\hspace{0.25em}\hspace{0.25em}\hspace{0.25em}\to 1\text{ unpaired electron; }\mathrm{MM}\to \sqrt{3}\mathrm{BM}\\ {\left[\mathrm{Co}{\left({\mathrm{NO}}_2\right)}_6\right]}^{3-}\hspace{0.25em}\hspace{0.25em}\hspace{0.25em}\hspace{0.25em}\to 0\text{ unpaired electron; }\mathrm{MM}\to 0\mathrm{BM}\\ {\left[\mathrm{Mn}(\mathrm{CN}{)}_6\right]}^{3-}\hspace{0.25em}\hspace{0.25em}\hspace{0.25em}\hspace{0.25em}\to 2\text{ unpaired electrons; }\mathrm{MM}\to \sqrt{8}\mathrm{BM}\end{array}$
All are low spin complex.