Bella has drawn a line to represent the parallel cross-section of the triangular prism. Is she correct? Explain.

triangular prism lying on a rectangular face and a line drawn along the slant height of the triangle

A) Yes, the line should be parallel to one of the rectangular faces
B) Yes, the line should be parallel to the triangular faces
C) No, the line should be parallel to the triangular faces
D) No, the line should be parallel to one of the rectangular faces