Regarding Phylum - Echinodermata : Assertion (A): In member- of Echinodermata body is covered by calcareous ossicles Reason (R): As body is covered by calcareous ossicles they are called Echinodermata Regarding (A) and (R) :

Question

( a ) Both A and R are incorrect
( b ) A is correct but R is incorrect
( c ) Both A and R are correct & R is the correct explanation for A
( d ) Both A and R are correct but R is not the correct explanation for A