$X$ - The oviducts,uterus and vagina constitute the female accessory ducts.
$Y$ - The male sex accessory ducts include vasa efferentia,epididymis and vas deferens,while the rete testis is an external genital organ.

• A
  $X$ and $Y$ are correct.
• B
  $X$ and $Y$ are incorrect.
• C
  $X$ is correct,$Y$ is incorrect.
• D
  $X$ is incorrect,$Y$ is correct.