The picture in the question is a example of cell division (mitosis), it process is divided into prophase, prometaphase, metaphase, anaphase, telophase and cytokinesis. The Cell A and B are in metaphase, being the cell A in metaphase II and the B in metaphase I.
Metaphase I and II are related to the stage where the chromosomes are attached as homologous pairs at the equator, being the I by the pairs and two by the single chromosomes with crossing over.