Match List-$I$ with List-$II$ :

List-$I$ (Process)	List-$II$ (Definition)
$A$. Productivity	$I$. Gross primary productivity minus respiration losses
$B$. Net primary productivity	$II$. Rate of formation of new organic matter by consumers
$C$. Gross primary productivity	$III$. Rate of biomass production
$D$. Secondary productivity	$IV$. Rate of production of organic matter during photosynthesis

Choose the correct answer from the options given below:

• A
  $A-III, B-I, C-II, D-IV$
• B
  $A-I, B-II, C-III, D-IV$
• C
  $A-III, B-I, C-IV, D-II$
• D
  $A-I, B-III, C-IV, D-II$