Class crustacea have which of the followig feature

Options

A. Cephalothorax, biramous appendages and gills
B. Cephalothorax, book lungs and chitinous exoskeleton
C. Head and thorax, book lungs and chitinous exoskeleton
D. Head and thorax, biramous appendages and book lungs

Answer

A

Explanation

In crustaceans the body is divisible into cephalothorax and abdomen. The cephalothorax is covered by exoskeleton called carapace. Respiration is carried out either by body surface or by gills.