Inside polygon

Which of the following is/are true?

A :

If $\triangle ABC$ is completely inside $\triangle XYZ$ , then the perimeter of $\triangle ABC$ is smaller, than the perimeter of $\triangle XYZ$ .

B :

If the $ABCD$ quadrilateral is completely inside the $VXYZ$ quadrilateral, then the perimeter of the $ABCD$ quadrilateral is smaller, than the perimeter of the $VXYZ$ quadrilateral.