The correct option is
A C
In some plants, the subaerial stems are modified for the purpose of vegetative reproduction. They are of different types like runners, offset, stolons and suckers.
A lateral branch arising from main stem close to the ground level travels underground for some distance. This branch is called a sucker. It turns up at its end and produces adventitious roots in the ground and shoots above forming a new plant.
Chrysanthemums is mainly cultivated for its beautiful flowers propagates through suckers.
Diagram (A) shows vegetative reproduction by stem. Diagram (B) shows reproduction by means of offset, which occurs in Pistia, Eichhornia. While diagram (D) shows reproduction by means of atolon, which is common in plants like Mentha, Members of family rosaceae.
So, the correct answer is "option D"