A has no garden, so that is out for me.
Apart from garden, the only difference really is presentations and decoration. I don't care what colour the walls are(I would remove all the wallpaper in all of them!) or what the furniture is like, I am only interested in the size and shape of the rooms.
So C has horrible curtains in the bedrooms and looks cluttered, but underneath it has good sized rooms, and the dining room is a good shape/size.
A inside looks nicest, I like the dining room bit (but no garden) Is the kitchen in A larger? It looks wider.
B is also nicely presented. It has the best outside space.
On balance, probably B.