Please help me on my Bio question

Question

Cells of the accessory gland in the fruit fly Drosophila melanogaster are binucleate, meaning they have two nuclei in one cytoplasm. Each nucleus has the normal amount of DNA expected in a fruit fly cell. What could have resulted in the production of these binucleate cells?

DNA replication took place, but mitosis and cytokinesis were skipped

DNA was not replicated and mitosis and cytokinesis were skipped

DNA replication and cytokinesis took place, but mitosis was skipped

DNA was not replicated, mitosis took place, but cytokinesis was skipped

DNA replication and mitosis took place, but cytokinesis was skipped

Answer 1

Mitosis begins after DNA replication and involves the movement of the replicated DNA to opposite polls of the cells. At the end of Mitosis, the nucleus begins to reform and following that the cell begins to divide its cytoplasm evenly by undergoing cytokinesis. Since the cells of the accessory gland of the fruit fly have two nuclei in one cell, Both DNA replication and mitosis have occurred but cytokinesis has not.