Which Ions Are Considered Spectators in the Reaction Between Aqueous

Which ions are considered spectators in the reaction between aqueous solutions of (NH₄) ₃PO₄ and CaCl₂?

A) 3 Ca²⁺ (aq) and 2 PO₄^{3 -} (aq)
B) 6 N^{3 -} , 24 H⁺ (aq) and 6 Cl ^- (aq)
C) 6 NH₄⁺ (aq) and 6 Cl ^- (aq)
D) 3 Ca²⁺ (aq) and 6 Cl ^- (aq)
E) 6 NH₄⁺ (aq) and 2 PO₄^{3 -} (aq)