Read the given Statements regarding immunization and select the option that identifies the correct ones .
I. The principal of vaccination is based on the memory of the immune system .
II.The antibodies produced in the body against antigens neutralise the pathogenic agents before the actual infection.
III. Hepatitis B vaccine is prepared by using a virus in recombination DNA technology.
IV. Antibiotics are given directly in elicit a quick immune response.

Options

A. I and III
B. II ,III and IV
C. I,II and III
D. I and IV

Answer

D