Which of the following is correctly matched?
$I$. Alpha diversity - Number of species in a given habitat
$II$. Genetic diversity - Variation of the genes within species
$III$. Beta diversity - Diversity of the habitat in the whole region
$IV$. Species diversity - Product of the species richness and evenness

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