In a Study of Medical Diagnosis,Weber Et Al

In a study of medical diagnosis,Weber et al.(1993) found that doctors:

A) were sensitive to the evidence provide by the symptoms,but not to base rates.
B) were sensitive to base rates only when they ignored the evidence provided by symptoms.
C) were sensitive both to base rates and to the evidence provided by the symptoms.
D) ignored base rates,treating each symptom-supported disease as equally possible.