Confirming a Specific Biological Cause of General Paresis Was Greatly

Multiple Choice

Confirming a specific biological cause of general paresis was greatly aided by eventually discovering that

A) all such patients had a history of syphilis.
B) most such patients developed syphilis later in life.
C) very few such patients had ever been treated with penicillin.
D) most such patients had lied about their sexual history.