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Magna flux is

[A].	A non-destructive inspection technique that makes use of magnetic field and magnetic particles to locate flaw in materials	[B].	An instrument using ultrasonic techniques for crack detection
[C].	An instrument used for inspection of weldings	[D].	An instrument used for precision measurements using magnetism and flux density
[E].	Intensity of X-rays required corresponding to thickness of a job for determination of defects.

Answer: Option A