$\begin{array}{1 1} (a)\;\text{1-liquid ,2-gas ,3-Solid} \\ (b)\; \text{1-solid, 2-liquid, 3-gas} \\ (c)\; \text{1-gas, 2-solid, 3-liquid} \\ (d)\; \text{1-gas, 2-liquid, 3-solid} \end{array}$
