A chest X-ray was performed while the patient was standing with his back to the film. In what view was the X-ray taken?

a. Anteroposterior

b. Oblique

c. Lateral

d. Posteroanterior

When performing a chest X-ray, if the patient is standing with his back to the film, the view of the X-ray that was taken is posteroanterior. The correct answer is option D. A posteroanterior view, back to front, is when the chest is against the film plate and the machine is behind the patient.