The correct option is B CCl4 and piperazine
Deworming is the giving of an antihelminthic drug to a human or animal to rid them of helminths parasites, such as roundworms, flukes and tapeworms. CCl4 and piperazine is used for deworming. CCl4 is used to remove dead worms and excess drugs. Piperazine is an oral anthelmintic (dewormer) used in animals to kill roundworms. Tablets, capsules, pastes or a liquid suspension may be given directly in the mouth or mixed in the food. Hence, option A is correct.