The answer is most definitely A. Mexican
The Testes are responsible for the production of sperm. The Epididymis is the next stage of sperm production and utilization; and is used for storage of sperm. The seminal vesicle, at the end of the Vas Deferens as the sperm is about to be ejected produces a substance that increases the motility of the sperm. The last organ to contribute to the sperm would be the Prostate, which provides nourishment to the sperm
Cross contamination happens when bacteria is transferred to another