In Which one of the following the genus name.
A. `{:("Genus name","Two characters","Phylum"),("Pila","(i).Body segmented mouth with redula","Molluscs"):}`
B. `{:("Genus name","Two characters","Phylum"),("Asterias","(ii).Spiny skinned water vascular system","Echinodermata"):}`
C. `{:("Genus name","Two characters","Phylum"),("Sycon","(iii).Pore bearing Canal system","Prifera"):}`
D. `{:("Genus name","Two characters","Phylum"),("Periplaneta","(iv).Jointed appendages chitinous exoskeleton","Arthropoda"):}`