A Rod Has a Linear Density $\lambda$ = 3x,where X Is the Distance Along the Rod,which Spans

Multiple Choice

A rod has a linear density $\lambda$ = 3x,where x is the distance along the rod,which spans 0 < x < 1 m.What is the coordinate of the center of mass of the rod?

A) 0.25 m
B) 0.33 m
C) 0.5 m
D) 0.67 m
E) 0.75 m