Frontal and coronal sections are the same thing

Which of these statements regarding radiographic contrast is FALSE?

a. There are few shades of gray in a radiograph with short-scale contrast. b. Short-scale contrast describes a radiograph in which the density differences between adjacent areas are large. c. There are many shades of gray in a radiograph with long-scale contrast. d. Long-scale contrast describes a radiograph in which the density differences between adjacent areas are large.

Xopenex is the trade name of which of the following?

A) metaproterenol B) pirbuterol C) levalbuterol D) terbutaline