Which of the Following Are Operations to Enhance Physical Properties

Multiple Choice

Which of the following are operations to enhance physical properties (three correct answers) :

A) annealing
B) anodizing
C) die casting
D) drilling
E) electroplating
F) rolling of nickel alloys
G) sheet metal drawing
H) sintering of pressed ceramic powders
I) surface grinding of hardened steel
J) tempering of martensitic steel
K) turning
L) ultrasonic cleaning