Regarding Aschelminthes: 1. Fertilisation is internal 2. Development is direct. 3. Development is indirect. Regarding 1,2 and 3:

Question

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