Task: Question Answering
Input (English): Which of the following represents an accurate statement concerning arthropods?
(A)They possess an exoskeleton composed primarily of peptidoglycan. (B)They possess an open circulatory system with a dorsal heart. (C)They are members of a biologically unsuccessful phylum incapable of exploiting diverse habitats and nutrition sources. (D)They lack paired, jointed appendages.
Output (English): B