The correct option is C One cell with 2 nuclei is formed
Mitosis involves karyokinesis followed by cytokinesis.
During karyokinesis, the daughter chromosomes separate and move to opposite poles, and a nuclear envelope forms around them and thus two nuclei are formed.
This is followed by cytokinesis during which the cytoplasm divides and two daughter cells each with one nucleus is formed.
If nuclear division is not followed by cytokinesis, then a cell with 2 nuclei will be formed.