In angiosperms,the following events occur during megasporogenesis and megagametogenesis:
$(i)$ Differentiation of megaspore mother cells
$(ii)$ Meiosis of the megaspore mother cell
$(iii)$ Formation of a linear tetrad
$(iv)$ Mitotic division of the functional megaspore
$(v)$ Degeneration of $3$ megaspores
$(vi)$ Formation of embryo sac
$(vii)$ Fusion of polar nuclei
The correct sequence is:

• A
  $(i), (ii), (iii), (v), (iv), (vi), (vii)$
• B
  $(i), (ii), (iii), (iv), (v), (vi), (vii)$
• C
  $(v), (i), (ii), (iii), (iv), (vi), (vii)$
• D
  $(i), (ii), (iii), (v), (vi), (iv), (vii)$