Which of the following statements are correct regarding the development of embryo sac?

(i)   The type of nuclear division is free, in which there is no formation of the cell wall.

 (ii) Out of the eight nuclei, six are surrounded by a cell wall

 (iii)  Central cell situated below the egg apparatus.         

• A

  (i) and (ii) only

• B

  (ii) and (iii) only

• C

  (iii) only

• D

   (i), (ii) and (iii)