A woman who had a vasectomy for her partner 6 months ago presents because she has missed her period. She asks if the vasectomy could have failed. The last semen analysis at 12 weeks showed azoospermia. What should she be told?AVasectomy failure after confirmed azoospermia is impossibleBLate failure of vasectomy (recanalisation) is rare but can occur even after confirmed azoospermia, with a rate of approximately 1 in 2,000. A pregnancy test should be performedCShe must have become pregnant before the vasectomyDVasectomy always fails after 6 monthsEAzoospermia means permanent sterility with no exceptionsCheck my answer