Which of the following statement is false regarding the method of recombination or crossing-over?
A. Crossing-over takes place during prophase I of meiosis
B. Recombination happens at the level of the nucleotide and can happen at any point along the length of the chromosome.
C. Crossing-over is used by organisms to enhance genetic diversity at every generation.
D. Recombination occurs among sister-chromatids of homologous chromosomes.