Which Statement About Variolation Is FALSE

Multiple Choice

Which statement about variolation is FALSE?

A) Variolation originated in ancient China.
B) Variolation involves infecting a person with dried scabs from lesions of people who had recovered from the disease.
C) Variolation used chemicals produced from another microorganism to immunize against the disease causing microbe.
D) Variolation leads to a controlled infection that induces immunity against further infection.