The Use of Malarial Fever to Treat Paresis

The use of malarial fever to treat paresis

A) is an example of the barbaric treatment that mental patients received at the beginning of the twentieth century.
B) proved to be so ineffectual that many professionals abandoned the biological explanation of mental disorders.
C) represented the first clear-cut defeat of a mental disorder by medicine.
D) was the first time scientists used knowledge of brain chemistry to develop specific drugs for treating mental disorder.