A Piece of Iron Wire Weighing 1

Multiple Choice

A piece of iron wire weighing 1.63 g is converted to Fe²⁺(aq) and requires 21.9 mL of KMnO₄ solution for its titration.What is the molarity of the KMnO₄ solution? The reaction occurring during the titration is:
5 Fe²⁺ (aq) + MnO₄^- (aq) + 8 H⁺ (aq) → 5 Fe³⁺ (aq) + Mn²⁺ (aq) + 4 H₂O

A) 1.33 M
B) 0.267 M
C) 2.67 × 10^-4 M
D) 14.9 M
E) 1.33 × 10^-3 M