(1 point) 5. Which of the following best describes the vertical cross section through the vertex of the right rectangular pyramid in the image? Note that the figure is not drawn to scale. 12 in. 14 in. 10 in. O An isosceles triangle with a base length 10 in, and height 12 in. O A rectangle with a base length 14 in, and height 10 in. O A scalene triangle with side lengths 14. 10, and 12 in. An isosceles triangle with a base length of 14 in, and a height of 12 in.