Two common characters found in centipede, cockroach, and crab are (a) book lungs and antennae (b) compound eyes and anal cerci (c) jointed legs and chitinous exoskeleton (d) green gland and tracheae.
Option C Centipede, cockroach, and crab all belong to phylum arthropoda which are characterized by jointed legs and chitinous exoskeleton. Arthropods have bilaterally symmetrical and metamerically segmented body with haemocoel and open blood vascular system.
