Given below are two statements:
Statement I: In the oxalic acid vs \( \mathrm{KMnO_4} \) (in the presence of dil. \( \mathrm{H_2SO_4} \)) titration the solution needs to be heated initially to \( 60^\circ \mathrm{C} \), but no heating is required in Ferrous ammonium sulphate (FAS) vs \( \mathrm{KMnO_4} \) titration (in the presence of dil. \( \mathrm{H_2SO_4} \)).
Statement II: In oxalic acid vs \( \mathrm{KMnO_4} \) titration, the initial formation of \( \mathrm{MnSO_4} \) takes place at high temperature, which then acts as catalyst for further reaction. In the case of FAS vs \( \mathrm{KMnO_4} \), heating oxidizes \( \mathrm{Fe^{2+}} \) into \( \mathrm{Fe^{3+}} \) 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:
