Which of the following propositions is true?
(A) p \(\rightarrow\) q \(\equiv\) ~p \(\rightarrow\) ~q
(B) ~(p \(\rightarrow\) ~q) \(\equiv\) ~p \(\land\) q
(C) ~(p \(\leftrightarrow\) q) \(\equiv\)[~ (p \(\rightarrow\) q) \(\land\) ~ (q \(\rightarrow\)p)]
(D) ~(~p \(\rightarrow\)~q) \(\equiv\) ~p \(\land\) q