The correct options are
A Meiosis
B Mitosis
During the process of formation of female gamete or egg cell, both meiosis and mitosis type of cell divisions take place. The process is called as megasporogenesis. The megaspore mother cell undergoes meiosis and forms four haploid cells called megaspores. Subsequently, mitotic division takes place in one of the megaspores to form egg cell, synergid cells and antipodal cells.