A.Whooping cough, smallpox and measles.B.Whooping cough, chickenpox and measles.C.Whooping cough, smallpox and German measles.D.Whooping cough, chickenpox and German measles
A.Whooping cough, smallpox and measles.
B.Whooping cough, chickenpox and measles.
C.Whooping cough, smallpox and German measles.
D.Whooping cough, chickenpox and German measles