Rank each of the following ions from most basic (1) to least basic (3):

H₂SO3₃, HSO₃⁻, SO₃²⁻

(a) H₂SO3₃[1], HSO₃⁻ [2], SO₃²⁻ [3]
(b) HSO₃⁻ [1], H₂SO3₃[2], SO₃²⁻ [3]
(c) SO₃²⁻- [1], H₂SO3₃[2], HSO₃⁻[3]
(d) HSO₃⁻ [1], SO₃²⁻[2], H₂SO3₃[3]