Which compound will produce an aqueous solution which has a pH greater than 7?

A.     ${\text{CuS}}{{\text{O}}_{\text{4}}}$

B.     ${\text{FeC}}{{\text{l}}_{\text{3}}}$

C.     ${\text{N}}{{\text{a}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}$

D.     ${\text{N}}{{\text{H}}_{\text{4}}}{\text{N}}{{\text{O}}_{\text{3}}}$

C