To set the line-width attribute the following command is used.
(a) SETLINEWIDTHSCALEFACTOR (lw)
(b) Setlinewidth()
(c) Setlinewidthscalefacto (lw)
(d) setLineWidthScaleFactor (lw)
I got this question by my school teacher while I was bunking the class.
This intriguing question comes from Line Attributes in portion Graphics Primitives of Computer Graphics