Let \[{{z}_{1}}\] and \[{{z}_{2}}\] be nth roots of unity which are ends of a line segment that subtend a right angle at the origin.Then n must be of the form[IIT Screening 2001; Karnataka 2002]

Let \[{{z}_{1}}\] and \[{{z}_{2}}\] be nth roots of unity which are en

1.	Let \[{{z}_{1}}\] and \[{{z}_{2}}\] be nth roots of unity which are ends of a line segment that subtend a right angle at the origin.Then n must be of the form[IIT Screening 2001; Karnataka 2002]
A.	4k + 1
B.	4k + 2
C.	4k + 3
D.	4k
Answer» E.