$I.$ Oparin's theory of the origin of life is based on $....A......$
$II.$ The chemical theory of the origin of life was given by $....B......$

• A
  $A$ - biological evolution,$B$ - Oparin
• B
  $A$ - elemental evolution,$B$ - Haldane
• C
  $A$ - organic evolution,$B$ - Oparin and Haldane
• D
  $A$ - chemical evolution,$B$ - Oparin and Haldane