Select the correct ratios for the given substances in the reaction 2KMnO₄ + 16HCl → 2KCl + 2MnCl₂ + 8H₂O + 5Cl₂:

a. KMnO₄ : KCl = 1:1
b. HCl : H₂O = 2:1
c. KMnO₄ : Cl₂ = 2:5
d. HCl : MnCl₂ = 8:2