The following readings were taken with a tachometer on to a vertical staff. Horizontal Distance Stadia Readings 46.20 m 0.780; 1.010; 1.240 51.20 m 1.860; 2.165; 2.470. Calculate the tacheometric constants.

The following readings were taken with a tachometer on to a vertical s

1.	The following readings were taken with a tachometer on to a vertical staff. Horizontal Distance Stadia Readings 46.20 m 0.780; 1.010; 1.240 51.20 m 1.860; 2.165; 2.470. Calculate the tacheometric constants.
A.	100, 0.20 m
B.	200, 0.10 m
C.	100, 0.10 m
D.	200, 0.20 m
Answer» B. 200, 0.10 m