For the reaction $\text{W(aq)} + 2\text{X(aq)} \rightleftharpoons 2\text{Y(aq)} + 3\text{Z(aq)}$, which units are correct for the equilibrium constant $K_c$?
- A$\text{mol dm}^{-3}$
- B$\text{mol}^2\text{ dm}^{-6}$
- C$\text{mol}^{-1}\text{ dm}^3$
- D$\text{mol}^{-2}\text{ dm}^6$