$2\text{PbO}\left(\text{s}\right)+\text{C}\left(\text{s}\right)\to 2\text{Pb}\left(\text{s}\right)+{\text{CO}}_{\text{2}}\left(\text{g}\right)$

Which of the following statements are correct for the above chemical reaction

i) lead is reduced                 ii) carbon dioxide is oxidized

iii) carbon is oxidized         iv) lead oxide is reduced