What Is the Difference Between First-Generation Antipsychotics and Second-Generation Antipsychotics

What is the difference between first-generation antipsychotics and second-generation antipsychotics?

A) First-generation antipsychotics only treat the negative symptoms of schizophrenia
B) Second-generation antipsychotics only function at D2 receptors; whereas first-generation antipsychotics function at both D2 receptors and serotonergic receptors.
C) Second-generation antipsychotics can treat both positive and negative symptoms of schizophrenia; whereas first-generation antipsychotics only treat positive symptoms
D) Second-generation antipsychotics can treat only negative symptoms of schizophrenia; whereas first-generation antipsychotics only treat positive symptoms and negative symptoms of schizophrenia.