In the Figure Above,a New Beneficial Allele,B,arises on a Chromosome

In the figure above,a new beneficial allele,B,arises on a chromosome containing the ordered loci A,B,C,D,and E,depicted in the top panel.After reproduction,those chromosomes possessing the B allele increase in frequency.Over time,recombination breaks up the association of the B allele with the A,C,D,and E alleles.Assuming that the five loci are spaced evenly along the chromosome,the first pair of allele combinations to be broken up will be

A) B and A.
B) B and C.
C) B and D.
D) B and E.
E) All alleles will break up at an equal rate