Study the following features.A.     OperculumB.     ClaspersC.     Placoid scalesD.     Poison stingWhich of the above features are present in Torpedo?

Torpedo is commonly called electric ray. It is included under the class Chondrichthyes characterised by the presence of placoid scales and claspers (in males). An operculum is absent. A poison sting is present in Trigon (stingray) but not in Torpedo.