Fill in the blanks marked in the classification table of $Vertebrata$ from the choices provided below with respect to $A, B, C, D, E$ and $F$ and choose the correct option:
$I$. Pisces
$II$. Osteichthyes
$III$. Agnatha
$IV$. Gnathostomata
$V$. Chondrichthyes
$VI$. Cyclostomata
$A - B - C - D - E - F$

• A
  $III - IV - VI - I - V - II$
• B
  $VI - I - V - II - III - IV$
• C
  $I - VI - IV - II - III - V$
• D
  $IV - V - III - II - IV - I$