Which one of the following is representing the group of diatoms?
(A) Pinnularia, Navicula, Cymbella, Melosira
(B) Euglenamorpha, Hedneria , Heteronema, Colacium
(C) Nostoc, Anabaena, Aulosira, Cylindrospermum
(D) Cochlodinium, Gymnodinium, Lenodinium, Peridinium

