Arrange the following steps in the correct sequence for breeding a genetically diverse crop variety:
$I -$ Cross-hybridization among the selected parents
$II -$ Testing, release, and commercialization of new cultivars
$III -$ Selection and testing of superior recombinants
$IV -$ Collection of variability
$V -$ Evaluation and selection of parents

• A
  $IV \rightarrow V \rightarrow I \rightarrow III \rightarrow II$
• B
  $IV \rightarrow I \rightarrow V \rightarrow III \rightarrow II$
• C
  $IV \rightarrow III \rightarrow V \rightarrow I$
• D
  $IV \rightarrow I \rightarrow III \rightarrow V$