The answer is letter C.
Many men fear the permanency of having a vasectomy. It is because once the procedure is done there is no turning back. Vasectomy is usually practiced for birth control, prostate cancer prevention, or sometimes for sex changing purposes. It is a procedure only done in men. It is still a highly unnatural practice in society as this actually seems like a removal of manhood in men. Vasectomies are not done often as compared to having a ligation in women.