Read the following statements and select the correct ones.
(i) Vaccine is a preparation (or suspension ) of a dead/attenuated pathogen of a disease which on inoculation ( or injection ) into a healthy person, provides temporary/permanent active immunity by inducing antibodies formation.
(ii) Immunisation is the process by which the body produces antibodies against the vaccine preventable diseases through administration of specific vaccines.
(iii) The principle of immunisation or vaccination is based on the property of 'memory' of the immune system.
iv) If a person is infected with some deadly microbes to which quick immune response is required; in that case, we need to directly inject the performed antibodies or antitoxins e.g., in case of tetanus.

Options

A. (i) and (ii)
B. (iii) and (iv)
C. (i),(ii) and (iii)
D. (i),(ii),(iii) and (iv)

Answer

D