Which traits did Morgan choose for the male and female $Drosophila$ respectively to explain linkage and recombination?

• A
  Yellow-bodied,white-eyed male and brown-bodied,red-eyed female.
• B
  Brown-bodied,red-eyed male and yellow-bodied,white-eyed female.
• C
  Yellow-bodied,red-eyed male and brown-bodied,white-eyed female.
• D
  Brown-bodied,white-eyed male and yellow-bodied,red-eyed female.