Buffing is

A.A process of electroplating
B.Covering a metal part with soft materials to prevent damage
C.An finishing operation in broaching
D.The process of bringing out the luster of metal
E.An etching process

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.