Correct position of floral parts over thalamus in mustard plant is

• A

  Gynoecium is situated in the centre, and other parts of the flower are located at the rim of the thalamus, at the same level.

• B

  Gynoecium occupies the highest position, while the other parts are situated below it.

• C

  Margin of the thalamus grows upward, enclosing the ovary completely, and other parts arise below the ovary.

• D

  Gynoecium is present in the centre and other parts cover it partially.