$2{\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CHO}\underset{{\mathrm{H}}_2\mathrm{O}}{\overset{{\mathrm{OH}}^{-}}{\to }}{\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{CH}}_2\mathrm{OH}+{\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{COO}}^{-}$
Which of the following statements are correct regarding the conversion of benzaldehyde to benzyl alcohol?
(i) One hydrogen is coming from H₂O as H⁺ and another from ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CHO}$ as ${\mathrm{H}}^{-}$.
(ii) One hydrogen is coming from ${\mathrm{H}}_2\mathrm{O}$ as ${\mathrm{H}}^{-}$ and another from ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CHO}$ as H⁺.
(iii) One hydrogen from ${\mathrm{H}}_2\mathrm{O}$ and another from ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{CHO}$, both in the form of H^-.
(iv) This reaction is an example of disproportionation reaction.