If the Molar Concentration of Sodium Phosphate (Na₃PO₄) Is 0

If the molar concentration of sodium phosphate (Na₃PO₄) is 0.30 M, what is the concentration of sodium ions?

A) 0.10 M
B) 0.45 M
C) 0.60 M
D) 0.30 M
E) 0.90 M