Match the following processes with their corresponding entropy changes:

Process	Entropy Change
$(a)$ Liquid to vapor conversion	$(1)$ $\Delta S = 0$
$(b)$ Process not spontaneous at any temperature	$(2)$ $\Delta S = (+)$
$(c)$ Reversible expansion of an ideal gas	$(3)$ $\Delta S = (-)$

(A) The correct matches are:
$(a)$ Liquid to vapor conversion involves an increase in disorder,so $\Delta S = (+)$.
$(b)$ $A$ process that is not spontaneous at any temperature typically involves a decrease in entropy and an increase in enthalpy,so $\Delta S = (-)$.
$(c)$ For a reversible process in an isolated system or specific reversible expansions,the entropy change of the universe is zero,so $\Delta S = 0$.
Therefore,the correct sequence is $(a-2, b-3, c-1)$.