The following four unconventional machining processes are available in a shop floor. The most…

The following four unconventional machining processes are available in a shop floor. The most appropriate one to drill a hole of square cross section of 6 mm × 6 mm and 25 mm deep (A) is abrasive Jet Machining (B) is Plasma Arc Machining (C) is Laser Beam Machining (D) is Electro Discharge Machining