A Week After Getting a Vasectomy, a Man Resumes Having

Multiple Choice

A week after getting a vasectomy, a man resumes having sex with his wife. Two months later, he discovers his wife is six weeks pregnant. What is the most probable explanation?

A) They had unprotected sex too soon, and sperm remained in the vas deferens.
B) They had sex too soon, causing the vasectomy to fail.
C) The vas deferens reconnected, which occurs in about 10% of vasectomies.
D) His wife must have had sex with another man.
E) He should have gotten the more reliable vasovasostomy instead of a vasectomy.