Nathan Is Conducting Research for a Speech About Laser Eye

Nathan is conducting research for a speech about laser eye surgery. Which of the following sources is most likely to contain errors?

A) a newspaper interview with a laser eye surgeon in which the surgeon describes some common procedures
B) a hospital website that describes the procedures and equipment used in laser eye surgery
C) a magazine article that summarizes several recent studies on the risks and benefits of laser eye surgery
D) a journal article in which a researcher describes the results of her study on the health effects of laser eye surgery