Concept:
This question is based on standard laws of sets.
Step 1: De-Morgan's Law.
\[
(A\cup B)^c=A^c\cap B^c
\]
So,
\[
A\rightarrow II
\]
Step 2: Associative Law.
\[
A\cup(B\cup C)=(A\cup B)\cup C
\]
So,
\[
B\rightarrow IV
\]
Step 3: Distributive Law.
\[
A\cup(B\cap C)=(A\cup B)\cap(A\cup C)
\]
So,
\[
C\rightarrow III
\]
Step 4: Difference of sets Law.
\[
A\setminus B=A\cap B^c
\]
So,
\[
D\rightarrow I
\]
Therefore,
\[
A-II,\ B-IV,\ C-III,\ D-I
\]
\[
\therefore \text{Correct Answer is (C)}
\]