A false positive result on a contamination test occurs when the test indicates that a contaminant is present in an uncontaminated substance; conversely, a false negative result indicates an absence of contaminant that is, in fact, present. To accurately detect mercury contamination in water supplies, researchers should use the laboratory test that has the lowest proportion of false positive results.
Which of the following, if true, gives the most support to the recommendation above?
【选项】
The mercury contamination test that has the lowest proportion of false positive results does not detect other heavy metals such as lead and cadmium.
选项是否正确？