Both ends of the lines may be visible from intermediate points on the line. This case comes under which among the three kinds of obstacles to chaining?

obstacles to chaining but not ranging

obstacles to ranging but not chaining

obstacles to ranging and chaining

Both ends of the lines may be visible from intermediate points on the

1.	Both ends of the lines may be visible from intermediate points on the line. This case comes under which among the three kinds of obstacles to chaining?
A.	obstacles to ranging but not chaining
B.	obstacles to chaining but not ranging
C.	obstacles to levelling
D.	obstacles to ranging and chaining
Answer» B. obstacles to chaining but not ranging