Determine the number of moles of 0.141 M KOH needed to reach the equivalence point for the titration of a solution of 200 mL of HClO₄ with a 0.1211 M concentration.
a) 0.0209 moles
b) 0.0141 moles
c) 0.0282 moles
d) 0.0353 moles