Explain when E codes are used

Using a propane torch to heat the underside of a ___ membrane as it is unrolled can result in roof-covering fires that spread rapidly across the entire roof

A) single-ply B) fluid-applied C) multi-ply D) built-up

Image magnification can be decreased by

A) increasing the target-object distance. B) increasing the object-image receptor distance. C) decreasing the target-surface distance. D) increasing the focal spot size.