Which ONE of the following statements about the ROC curve

(when the results of a diagnostic test are cut‐points in a continuum) is INCORRECT?

A. The ROC curve is obtained by plotting sensitivity vs specificity for every distinct cut‐off value.
B. A ROC curve that is no better than chance will lie along a 45° line.
C. The area under the ROC would be 1 for a perfect test.
D. When comparing two ROC curves, for two different tests on the same sample, the one with the higher ROC is considered more accurate.
E. The best cut‐point for the diagnostic test is the one nearest the upper left‐hand corner