Regarding Phylum – Echinodermata : 1. The most distinctive feature of echinoderms is the presence of water vascular system. 2. An excretory system is absent Regarding 1 and 2 :

Question

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