Regarding Aschelminthes: 1. Sexes are separate 2. They are monoecious. 3. Often females are longer than males. Regarding 1,2 and 3:

Question

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