Surfaces produced by straight and cylindrical grinding tools tend to create which type of roughness?

Irregularly spaced but non directional roughness

Regularly spaced but directional roughness

Regularly spaced but non directional roughness

Irregularly spaced but directional roughness

Surfaces produced by straight and cylindrical grinding tools tend to c

1.	Surfaces produced by straight and cylindrical grinding tools tend to create which type of roughness?
A.	Regularly spaced but directional roughness
B.	Regularly spaced but non directional roughness
C.	Irregularly spaced but directional roughness
D.	Irregularly spaced but non directional roughness
Answer» D. Irregularly spaced but non directional roughness