The simplified form of the Boolean function $\mathrm{F}(W, X, Y, Z)=\Sigma(4,5,10,11,12,13$, $14,15)$ with the minimum number of terms and smallest number of literals in each term is
- $W X+\bar{W} X \bar{Y}+W \bar{X} Y$
- $W X+W Y+X \bar{Y}$
- $X \bar{Y}+W Y$
- $\bar{X} Y+\bar{W} \bar{Y}$