Which of the following statements is not true regarding LASER?

[A] A LASER is a device that emits light through a process of optical amplification .
[B] LASER beams can be focused to very tiny spots, achieving a very high irradiance.
[C] The emitted LASER light is notable for its high degree of dispersive power unattainable using other technologies.
[D] LASER light is used in bar-code scanners

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