Which represents a double replacement reaction and would occur?

NH4NO3(aq) + AgCIO3(aq) → AgNO3(aq) + NH4CIO3(aq)

Na2CO3(aq) + CaCl2(aq) → 2NaCl(aq) + CaCO3(s)

NaF(aq) + KCl(aq) → NaCl(aq) + KCl(aq)

NaCl(aq) → Na+(aq) + Cl-(aq)