(A) : q → p is converse of p → q and they are not equal. So its a false statement.
[Truth table can help in proving this]
p→ q is false when p is True, q is false.
q→ p is false when q is True, p is false.
Thus they cannot be equivalent (or equal)
(B) : ~(p V q) = ~p ^ ~q (by De -morgan’s law). So its a correct statement.
(C) : p → q = ~q → ~p (by contrapositive property). So its a correct statement.
Thus, the correct answer to this question would be option (A)