An example of axile plantation is -
Axile placentation is found in multi carpellary syncarpous gynoecium. The margin of carpels growing inward, fuse and meet in the centre of the ovary. Axis forms in the centre of the ovary and hence ovary becomes multi-chambered. The ovules are borne at the central axis of it. Some such examples are potato, china rose, onion, lemon, orange, and tomato.
Therefore, the correct option is C.