Identify the A to D in this figure.
 

• A

  A–Petals, B–Carpel, C–Basal placentation, D–Androecium 

• B

   A–Androecium, B–Basal placentation, C–Carpel, D–Petals 

• C

  A–Basal placentation, B–Androecium, C–Petals, D–Carpel 

• D

   A–Carpel or Pistil, B–Basal placentation , C–Androecium, D–Petals