Regarding Platyhelminthes : 1. They are mostly endoparasites found in animals including human beings. 2. Hooks and suckers are present in the parasitic forms. 3. Some of them absorb nutrients from the host directly through their body surface. Regarding 1,2 and 3:

Question

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