After fixing the plane table to the tripod, the main operations which are needed at each plane table station are

i)    levelling
ii)   orientation
iii) centering
The correct sequence of these operations is
a)    (i), (ii),.(iii)
b)    (i), (iii), (ii)
c)    (iii), (i), (ii)
d)    (ii), (Hi), (i)

Ans: b