Decide which of the following (putative) equivalences are always true, and which are not. give some arguments to support your answers (but they don't need to he formal proofs). here p(x) and q(x) are two boolean variables depending on x. forall x(p(x) q(x)) identical-to forall xp(x) forall xq(x) forall x(p(x) q(x)) identical-to forall xp(x) forall xq(x) x(p(x) q(x)) identical-to xp(x) xq(x) x(p(x) q(x)) identical-to xp(x) xq(x)