Two solution `(A)` containing `FeCl_(3(aq.))` and separated by semipermeable membrane sa shown below. If `FeCl_(3)` solution on reaction with `K_(4)[Fe(CN)_(6)]` in aqueous solution gives blue colour of `Fe_(4)[Fe(CN)_(6)]`, the blue colour will be noticed in:
A. (a) Blue colour formation in side `A`
B. (b) Blue colour formation in side `B`
C. ( c) Blue colour formation in both sides
D. (d) No blue colour formation in either side
