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