The given figure shows the human foetus within the uterus with few structures marked as $A, B, C$ and $D$. Which of the following options shows the correct labeling?

• A
  $A \to$ Umbilical cord with its veins,$B \to$ Chorionic villi,$C \to$ Antrum,$D \to$ Plug of mucus in cervix
• B
  $A \to$ Umbilical cord with its vessels,$B \to$ Fimbriae,$C \to$ Oocyte,$D \to$ Plug of mucus in vagina
• C
  $A \to$ Umbilical cord with its vessels,$B \to$ Placental villi,$C \to$ Yolk sac,$D \to$ Plug of mucus in cervix
• D
  $A \to$ Umbilical cord with its veins,$B \to$ Placental villi,$C \to$ Trophoblast,$D \to$ Plug of mucus in vagina