Which of the following images makes the best argument for recombination?

Alleles of many different genes have been implicated in inheritance of a predisposition to skin cancer. Two are BAP1 located at 3p21and CDKN2a located at 9p21.
Consider a man who has two different alleles of BAP1 (call them A and B) and two different alleles of CDKN2a (call them C and D). The man inherited the BAP1A and the CDKN2aD alleles from his mother. From his father
he inherited the BAP1B and the CDKN2aC alleles. In real meiotic cells, it appears that at least one crossing over event always occurs while
homologous chromosomes are paired. Recombination in this case would not change genotypic ratios.
Which picture makes the best argument for why they will NOT change? See figure 4A-D.                           A) B) C) D)