I think A and C are correct
If you have a storage shed in your backyard, it can be converted into a ... she-shed, card/cigar room, music room, study area, or just a place to hang out ... Plus: How to add a light Plus: All about outdoor lighting ... Many storage sheds and (hopefully) livable sheds will have leftover storage space like shelves.
Could be pottery if the vase is clay. could be florist due to the plants inside. could even be abstract. I believe this is more of an open ended question