Q.  Which of the following diseases are known as six killer diseases in children?

(a) Whooping cough, yellow fever, hepatitis, TB, smallpox, Tetanus
(b) Diphtheria, whooping cough, measles, polio, TB, tetanus
(c) Diphtheria, yellow fever, TB, leprosy, malaria, cholera
(d) Whooping cough, diphtheria, Malaria, smallpox, TB, chickenpox