What Was Believed to Be the Difference Between Traditional Antipsychotic

What was believed to be the difference between traditional antipsychotic and atypical antipsychotic drugs that were developed in the 1990s?

A) The atypical antipsychotics were believed to be more effective while causing fewer side effects,but those hopes have not been fully realized.
B) The atypical antipsychotics were more effective at addressing positive psychotic symptoms,whereas traditional medications were more effective at addressing negative psychotic symptoms.
C) The atypical antipsychotics were believed to work on the dopamine system,whereas traditional antipsychotics were believed to work on the serotonin system.
D) The atypical antipsychotics were believed to work with fewer doses and in less time than the traditional antipsychotics.