Given below are two statements:
Statement I: In the oxalic acid vs \(\mathrm{KMnO}_4\) (in the presence of dil \(\mathrm{H}_2 \mathrm{SO}_4\) ) 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 \(\mathrm{H}_2 \mathrm{SO}_4\) )
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

1. A Both Statement I and Statement II are false
2. B Both Statement I and Statement II are true
3. C Statement I is false but Statement II is true
4. D Statement I is true but Statement II is false