One of the disadvantages of benford's law in detecting fraud is: a. that those cases with the lowest probabilities do not match benford's law and may need further investigation. b. potential suspects are more likely to know you are trying to detect fraud than if you use such detection techniques. c. it only broadly identifies the possible existence of fraud; it fails to narrow possibilities to a manageable field of promising leads. d. users must be thoroughly trained in its complexities to implement and use.