When a person with temporal lobe epilepsy is having an epileptic seizure, part of the brain' s temporal lobe produces abnormal electrical impulses, which can often, but not always, be detected through a test called an electroencephalogram (EEG). Ttherefore, although a positive EEG reading -- that is, evidence of abnormal electrical impulses -- during an apparent seizure is a reasonably reliable indicator of temporal lobe epilepsy, __. Of the following, which one logically completes the conclusion above?
A: a negative reading is just as reliable an indicator of the presence of temporal lobe epilepsy
B: a positive reading is more frequently an erroneous reading than is a negative one
C: a negative reading does not mean that temporal lobe epilepsy can be ruled out
D: a positive reading can also indicate the presence of other forms of epilepsy
Choose A, B, C or D as your solution.
C