The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as

The point where vertical line passing through the perspective centre i

1.	The point where vertical line passing through the perspective centre intersects the plane of the photograph, is known as
A.	photo plumb point
B.	plumb point
C.	nadir point
D.	isocentre
E.	none of these.
Answer» B. plumb point