Given below are four methods (A - D ) and their modes of action ( a - d) in achieving contraception. Select their correct matching from the four options that follow :

Question

Method	Mode of action
(1) The pill	(a) prevents sperm reaching cervix
(2) Condom	(b) prevents implantation
(3) Vasectomy	(c)Prevents ovulation
(4) Copper T	(d) Semen contains no sperm

 

Matching :

$\begin {array} {1 1} (1)\;A-(b),B-(c),C-(a),D-(d) & \quad (2)\;A-(c),B-(a),C-(d),D-(b) \\ (3)\;A-(d),B-(a),C-(b),D-(c) & \quad (4)\;A-(c),B-(d),C-(a),D-(b) \end {array}$