Assume that genes C and D are located on the same chromosome. On one chromosome, alleles C and D are found, while the homologue contains alleles c and d. Which of the following would be evidence of a recombination event?

A) Alleles C and D together on one chromosome.
B) Alleles c and d together on one chromosome.
C) Alleles C and d together on one chromosome.
D) Alleles c and D together on one chromosome.
E) Both alleles C and d together on one chromosome and alleles c and D together on one chromosome.