If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is

If a 30 m chain diverges through a perpendicular distance d from its c

1.	If a 30 m chain diverges through a perpendicular distance d from its correct alignment, the error in length, is
A.	d²/60) m
B.	(d²/30) m
C.	(d²/40) m
D.	d/30) m
Answer» B. (d²/30) m