If the concrete is poured while the ground is wet, it will not form a solid foundation. If the concrete does not form a solid foundation, it will either settle unevenly or crack. So if the concrete settles evenly, either it was poured while the ground was dry or it will crack. Which one of the following arguments is most closely parallel in its reasoning to the reasoning in the argument above? ['The film will not be properly exposed if the camera is not working properly. If the film is not properly exposed, then the photograph will be either blurred or dark. So if the photograph is not blurred, either the camera is working properly or the photograph will be dark.', 'If the camera is working properly, the photograph will not be blurred. The photograph will be blurred if the film is either not properly exposed or not properly developed. So if the camera is working properly, the film will be both properly exposed and properly developed.', 'If the camera is working properly, the film will be properly exposed. If either the film is properly exposed or corrections are made during the developing process, the photograph will not be dark. So if the camera is working properly, the photograph will not be dark.', 'The camera will work properly only if the film is properly exposed. But the film cannot be properly exposed if there is either not enough or too much light. So the camera will not work properly if there is either too much or not enough light.']