Trae or False? $(5$ pts$)$

No valid argument has a false conclusion.

All unsound arguments have false conclusions.

If an argument has a contradiction for a premise, then it is invalid.

EEx$(Sx$&$Vx)$&$AAx(SxVx)$

Translation scheme for question $4$ : $Vx-x$ is valid. $Sx-x$ is sound