Standard electrode potential of three metals X Y and Z are -1.2 V, + 0.5 V and -3.0 V respectively. The reducing power of these metals will be

• A

  $\mathrm{X}>\mathrm{Y}>\mathrm{Z}$

• B

  $\mathrm{Y}>\mathrm{Z}>\mathrm{X}$

• C

  $\mathrm{Y}>\mathrm{X}>\mathrm{Z}$

• D

  $\mathrm{Z}>\mathrm{X}>\mathrm{Y}$