Which of the Following Is the Correct Balanced Equation for the Equilibrium

Which of the following is the correct balanced equation for the equilibrium constant expression given below?
$K = \left[ \mathrm { Pb } ^ { 2 + } \right] \left[ \mathrm { F } ^ { - } \right] ^ { 2 }$

A) PbF₂(aq) $\rightleftharpoons$ Pb(s) + F₂(aq)
B) PbF₂(s) $\rightleftharpoons$ Pb²⁺(aq) + 2 F^-(aq)
C) Pb²⁺(aq) + 2 F^-(aq) $\rightleftharpoons$ PbF₂(s)
D) Pb(s) + F₂(aq) $\rightleftharpoons$ PbF₂(aq)
E) PbF⁺(aq) + F^-(aq) $\rightleftharpoons$ PbF₂(aq)