$.....P.....$ undergo meiosis to form sperms. $.....Q.....$ provide nutrition to the germ cells.
Choose the correct option for $P$ and $Q$.
$\quad\quad\quad\quad P \quad\quad\quad Q$

• A
  Germ cells $\quad$ $\quad$ $\quad$ Sertoli cells
• B
  Sertoli cells $\quad$ $\quad$ $\quad$ Leydig cells
• C
  Leydig cells $\quad$ $\quad$ $\quad$ Sperms
• D
  Sertoli cells $\quad$ $\quad$ $\quad$ Interstitial cells