A study showed that pre-ejaculatory fluid samples (pre-cum) of about 42% men contained sperm cells, and that 1/3 of those samples contained motile sperm cells. It means:
A. 42% /3= 14 % of men can fertilize a women, during unprotected sexual intercourse, without to ejaculate in her vagina (every 7th man).
B. ‘Pulling out’ method of contraception will not work in such cases.
C. Pre-cum can cause pregnancy.
D. Men does not know if his pre-cum contains sperm cells or not.
E. All of the above.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3564677/