Which one of the following reactions will yield 2-propanol ?

CH₃ – CHO $\underset{\mathrm{ii}) {\mathrm{H}}_2\mathrm{O}}{\overset{\mathrm{i}) {\mathrm{CH}}_3 \mathrm{MgI}}{\to }}$

${\mathrm{CH}}_2\mathrm{O}$ $\underset{\mathrm{ii}) {\mathrm{H}}_2\mathrm{O}}{\overset{\mathrm{i}){\mathrm{C}}_2{\mathrm{H}}_5\mathrm{MgI}}{\to }}$

${\mathrm{CH}}_2={\mathrm{CH}}_2+{\mathrm{H}}_2\mathrm{O}\stackrel{{\mathrm{H}}^{+}}{⟶}$

CH₂ = CH – CH₃ $\underset{\mathrm{ii}) {\mathrm{H}}_2{\mathrm{O}}_2/{\mathrm{OH}}^{-}}{\overset{\mathrm{i}) {\left({\mathrm{BH}}_3\right)}_2}{\to }}$