GOAT

Help!!!! I didn't get B when I attempted the question - I didn't know the usage of labels was a reasonable assumption. After knowing B is the answer... is this following logic, to get to the answer, flawed:

The stimulus states that the only way to link a genetic profile to a patient is via label, whereas for fMRIs it says "also contains enough info" to create an image of a patient's face. Since it doesn't specifically say there's only one method for fMRIs (unlike genetic profiles), can I assume that there could also be other methods (even if I didn't think of labels)- which leads to B) the potential to compromise patient privacy in circumstances in which a genetic profile would not.