Which One Of The Following Is Representing The Group Of Diatoms?

Nostoc, Anabaena, Aulosira, Cylindrospermum

Pinnularia, Navicula, Cymbella, Melosira

Euglenamorpha, Hedneria , Heteronema, Colacium

Cochlodinium, Gymnodinium, Lenodinium, Peridinium