The researchers found algorithmic errors in the commonly used software for functional magnetic resonance imaging (fMRI). They collected the results of 499 healthy people when they were at rest and found that their statistical methods needed to use real cases. This means that software can sometimes go astray and show activity even when the brain is at rest-the activity shown by the software is a product of software algorithms, not the brain being studied is really active. Which of the following, if true, would best support the above conclusion? ['Research conclusions can be obtained by fMRI and compiled by related programs.', 'fMRI can capture changes in blood flow in the brain, but cannot effectively show whether the brain is active.', 'The false-positive rate of fMRI software commonly used to diagnose brain function is above.', 'Only results obtained with fMRI-specific software will be subjected to confirmatory tests and further confirmed.']