The Difficulties with Computer Forensics Include Which of the Following

The difficulties with computer forensics include which of the following?

A) an unacceptable backlog of computers and devices waiting for examination
B) By the time the computers are examined, it is often too late to follow many of the leads produced.
C) Most detectives do not understand computer forensics and what it can accomplish to further their investigations.
D) Many computer forensic examiners do not understand the investigation, causing them to overlook relevant information.
E) all of the preceding