Computer Fraud Is Often Much More Difficult to Detect Than

Computer fraud is often much more difficult to detect than other types of fraud because

A) perpetrators usually only steal very small amounts of money at a time, thus requiring a long period of time to have elapsed before they're discovered.
B) massive fraud can be committed in only seconds, leaving little or no evidence.
C) most perpetrators invest their illegal income rather than spend it, thus concealing key evidence.
D) most computer criminals are older and are considered to be more cunning when committing such a fraud.