An unsigned char$$is an eight$-$bit quantity. Which is true?

$$

Group of answer choices

$($unsigned char$)1$ && $0$

$($~$(($unsigned char$)0$xff$))|($~$(($unsigned char$)0$xff$))$

$(($unsigned char$)0$xff$)^(($unsigned char$)0$xff$)$

~$(($unsigned char$)0$x$01)$

$(($unsigned char$)0$xff$)<<8$