Which of the following statement(s) is/are correct?

Oxidation state of Fe in ${\mathrm{Na}}_2\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_5\left(\mathrm{NO}\right)\right]$ is:

$$\begin{gathered} 2(+1)+\mathrm{oxidation} \mathrm{state} \mathrm{of} \mathrm{Fe}+5(-1)+1=0 \\ \mathrm{oxidation} \mathrm{state} \mathrm{of} \mathrm{Fe}=+2 \end{gathered}$$

Complex, ${\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]}^{+}$ has sp hybridization and has a linear shape.

Complex, ${\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$has +3 oxidation state on the central atom. ${\left[\mathrm{Co}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ has ${\mathrm{d}}^2{\mathrm{sp}}^3$ hybridization.