Read the following statements and choose option which have correct ones only. A. The body of arthropods are generally consists of head, thorax and abdomen. B. In member of phylum Platyhelminthes, alimentary canal is complete with a well developed muscular pharynx. C. Molluscs are terrestrial or aquatic (marine or fresh water) having an organ-system level of organisation. D. In annelids, neural system consists of paired ganglia connected by lateral nerves to a double solid dorsal nerve cord.