According to DeMorgan$$s laws, which of the following statements are equivalent to the one below?

boolean a $=!($x$<3$ && y$>2)$;

I. boolean a $=!($x$<3)$ && $!($y$>2)$;

II$.$ boolean a $=!($x$<3)||!($y$>2)$;

III. boolean a $=($x$>=3||$ y$<=2)$