In vasectomy: 1. A small part of the vas deferens is removed or tied up 2. It is done through a small incision on the ******* 3. Its reversibility is very poor. Regarding 1,2 and 3:

Question

( a ) 3 is incorrect; 1 and 2 are correct
( b ) All are correct
( c ) 2 is incorrect but 1 and 3 are correct
( d ) 1 is incorrect but 2 and 3 are correct