These grids show one pattern of shaded cells in different positions, but one grid has been flipped over instead of turned. Find it.

The orange cells form an L shape and the blue cell sits in the corner opposite the bend of the L. Turning (b) gives (a), (d) and (e). In (c) the short arm of the L points the other way compared with the blue cell, which only a flip (a mirror image) can do, so (c) is the odd one out.