Which statement is always true?
A cross section parallel to the base of a right rectangular prism is a square,
B
A cross section perpendicular to the base of a right rectangular prism is congruent to the base.
C. A cross section parallel to the base of a right rectangular prism is congruent to the base,
D. A cross section perpendicular to the base of a right rectangular prism has the same dimensions as the base.