The logic circuit shown in the diagram directly implements which of the Boolean expressions given below?

Group of answer choices

y$\text{'}+($xy$\text{'})$

y$\text{'}($x$+$y$)$

x$\text{'}(($xy$)\text{'}$x$\text{'})\text{'}$

$(($x$+$y$)$y$\text{'})\text{'}$