Given below are two statements:
Statement I: In the oxalic acid vs ${\rm{KMn}}{{\rm{O}}_4}$ (in the presence of dil ${{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}$) titration the solution needs to be heated initially to $60^0C$, but no heating is required in Ferrous ammonium sulphate (FAS) vs ${\rm{KMn}}{{\rm{O}}_4}$ titration (in the presence of dil ${{\rm{H}}_2}{\rm{S}}{{\rm{O}}_4}$ )
Statement II: In oxalic acid vs ${\rm{KMn}}{{\rm{O}}_4}$ titration, the initial formation of ${\rm{MnS}}{{\rm{O}}_4}$ takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs ${\rm{KMn}}{{\rm{O}}_4}$, heating oxidizes ${\rm{F}}{{\rm{e}}^{2 + }}$ into ${\rm{F}}{{\rm{e}}^{3 + }}$ by oxygen of air and error may be introduced in the experiment.
In the light of the above statements, choose the correct answer from the options given below