Selection A is a cutting and plant size is about 3". You will get the one in photo. Plant will be shipped no roots.
Propagate cutting or leaves: pot cutting in porous soil and wait until it roots then water. However, in summer(or dryer season) keep soil slightly moist or just place it in shade to keep moist stay in longer. Leaves have similar methods but you can plant leaves directly in soil or just set them on top of soil. Water propagation works too. There are many other methods you can also find on google.