Consider the equilibrium. Which are the Brønsted-Lowry bases?
a) H₂O and HPO₄²⁻
b) PO₄³⁻ and HPO₄²⁻
c) H₂O and OH⁻
d) PO₄³⁻ and H₂O
e) PO₄³⁻ and OH⁻