Which salts will dissolve in water to give solutions with a pH above 7?

I.     \({\text{N}}{{\text{a}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}\)

II.     \({\text{C}}{{\text{H}}_{\text{3}}}{\text{COONa}}\)

III.     \({\text{N}}{{\text{a}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\)

A.     I and II only

B.     I and III only

C.     II and III only

D.     I, II and III

A