If a cell has completed Mitosis but not yet completed Cytokinesis, then A) The cell will be elongated and have 2 separate nuclei inside it.
Cytokinesis is the stage of cytoplasmic division, directly after nuclear division in mitosis.
When cytokinesis does not occur, that means that there are two nuclei that have already been formed, however the cytoplasms of the two new daughter cells have not been separated.