Which expression is equivalent to (4g3h2k4)/8g3h2-(h5k3)5?

A; any shape with four sides w/ a parallel side across from each other is co soldered a rectangle. It’s not b because quadrilaterals just have to have four sides, not be rectangles, it’s not c because a square has to have equal length sides and not all rectangles do, and it’s not d because a parallelogram only has one set of parallel lines, but a rectangle has to have two.