What will be the ploidy of cells respectively of the nucellus, functional megaspore, Megaspore mother cell and female gametophyte present in a typical ovule? 

• A

  2n, 2n, n, n

• B

  n, 2n, 3n, n 

• C

  2n, n, 2n, n 

• D

  2n, n, n, 2n