This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ectopic Pregnancy (Hello ! Where are you ?), Subject name: Gynaecology & Obstetrics
With contraceptive failure, which method has a relative increased risk of ectopic pregnancy? 
Select and explain. 
A. Condoms, B. Vasectomy, C. Tubal sterilization, D. Vaginal ring
C: Tubal sterilization
Answer: C: Tubal sterilization 
Explanation: With any form of contraceptive, the absolute number of ectopic pregnancies is decreased because pregnancy occurs less often. In some contraceptive failures, however, the relative number of ectopic pregnancies is increased. Examples include some forms of Tubal sterilization, Intrauterine devices, High-dose estrogen, Emergency contraception and Progestin only Minipills.