After Completing the Following Unfinished Base Ionization Table, What Is

After completing the following unfinished Base Ionization table, what is the order of increasing base strength ?
Base K _b p K _b Bicarbonate ion, HCO₃ ^- 2.2×10 ^{- 8} Pyridine, C₅H₅N 8.77 Acetate ion, CH₃COO ^- 5.7×10 ^{- 10}

A) (weakest) Bicarbonate ion < Pyridine < Acetate ion (strongest)
B) (weakest) Bicarbonate ion < Acetate ion < Pyridine (strongest)
C) (weakest) Pyridine < Bicarbonate ion < Acetate ion (strongest)
D) (weakest) Acetate ion < Pyridine < Bicarbonate ion (strongest)
E) (weakest) Acetate ion < Bicarbonate ion < Pyridine (strongest)