The given figure shows the corrosion of iron in atmosphere.

Fill in the blanks by choosing an appropriate option.
At a particular spot of an object made of iron, ___(i)___ of iron to ferrous ion takes place and that spot behaves as ___(ii)___. Electrons released at anodic spot move through the metal and go to another spot on the metal and reduce oxygen in presence of `H^+` . This spot behaves as ___(iii)___. The ferrous ions are further oxidised by atmospheric oxygen to ferric ions which come out as rust, __(iv)____ and with further production of ____(v)__ ions.

Options

A. i-oxidation , ii-anode , iii-cathode , iv-`Fe_2O_3.xH_2O` , v-hydrogen
B. i-reduction, ii-cathode, iii-anode , `Fe_3O_4` , v-hydroxide
C. i-oxidation, ii-cathode, iii-anode , iv-`Fe_2O_3.xH_2O` , v-hydrogen
D. i-oxidation , ii-anode, iii-cathode , iv-`Fe_2O_3.H_2O`, v-ferrous

Answer

A