Life span of Cu-T- 380A: (A) 10 years, (B) 20 years, (C) 1 years, (D) 5 years
Answer is A. Cu-T- 380A is approved for 10 years but it has been demonstrated to maintain its efficacy for at least 12 years of use Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 497