Which of the following methods could be used as a form of eavesdropping using a telephone instrument?

Question

Options

• AWiring can be altered so the handset or receiver will act as an open microphone.
• BA radio transmitter can be concealed in the mouthpiece.
• CThe infinity transmitter can be used.
• DBoth band c.
• EAll of the above.

• A
  4% (1)
• B
  4% (1)
• D
  11% (3)
• E
  82% (23)

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