Which of the following is not true regarding electronic eavesdropping?

[answerhappygod]

Which of the following is not true regarding electronic eavesdropping?

A. An effective countermeasure to detect evidence of electronic eavesdropping in telephone equipment should be conducted by a person who is technically familiar with such equipment.
B. An effective countermeasure would be to conduct a physical search as well as an electronic search.
C. All wiring should be traced and accounted for.
D. A listening device installed in a wire will cause a crackling sound, click, or other noise that can be heard on the line.
E. None of the above.