Flow at constant rate through a tapering pipe is ____. | Fluid Mechanics Questions

i)    steady flow
ii)    uniform flow
iii)    unsteady flow
iv)    non-uniform flow
The    correct answer is
a)    (i) and (ii)
b)    (i)and(iv)
c)    (ii) and (iii)
d)    (ii) and (iv)
Ans: b