The correct option is A Cyclops
Crustacea is a class of phylum Arthropoda. The body of crustaceans is divided into cephalothorax (head + thorax) and abdomen. Dorsally, the cephalothorax is covered by a thick exoskeletal carapace. Two pairs of antennae and a pair of stalked compound eyes are present. For examples, Cyclops, Prawn, Lucifer, Squilla, etc.