Which of the following statements are true about Receiver Operating Characteristic (ROC) curves in Signal Detection Theory?
A. An ROC curve plots hit rates against false alarm rates.

B. An ROC curve demonstrates the trade-off between sensitivity and specificity.

C. An ROC curve that bows towards the upper left corner indicates high sensitivity.

D. An ROC curve is used to calculate the discrimination index (d').

E. An ROC curve can be used to determine the optimal criterion placement.

Choose the correct answer from the options given below: