Identify A, B, C and D in given figure

Options

A. `{:("A B C D"),("Anther Filament Pollen sac Pollen grains "):}`
B. `{:("A B C D"),("Anther Pedicel Megasporangium Pollen grains "):}`
C. `{:("A B C D"),("Anther Petiole Megasporangium Pollen grains "):}`
D. `{:("A B C D"),("Anther Petiole Pollen sac Magaspore "):}`

Answer

A