Which series of reactions correctly represents chemical reactions related to iron and its compounds?

• A
  $Fe$ $\xrightarrow{dil. \ H_2SO_4} FeSO_4$ $\xrightarrow{H_2SO_4, \ O_2} Fe_2(SO_4)_3$ $\xrightarrow{heat} Fe$
• B
  $Fe$ $\xrightarrow{O_2, \ heat} FeO$ $\xrightarrow{dil. \ H_2SO_4} FeSO_4$ $\xrightarrow{heat} Fe$
• C
  $Fe$ $\xrightarrow{Cl_2, \ heat} FeCl_3$ $\xrightarrow{heat, \ air} FeCl_2$ $\xrightarrow{Zn} Fe$
• D
  $Fe$ $\xrightarrow{O_2, \ heat} Fe_3O_4$ $\xrightarrow{CO, \ 600^{\circ}C} FeO$ $\xrightarrow{CO, \ 700^{\circ}C} Fe$